Model is underconstrained.
The following variables couldn't be defined:
 * E in component E
 * delta_E_rxn1 in component reaction1
 * delta_E_rxn2 in component reaction2
 * delta_E_rxn12 in component reaction12
 * delta_E_rxn9 in component reaction9
 * delta_E_i_rxn5 in component reaction5
 * delta_E_i_rxn6 in component reaction6
 * delta_E_i_rxn9 in component reaction9
 * delta_E_i_rxn15 in component reaction15
 * delta_ED_rxn11 in component reaction11
 * delta_ED_rxn12 in component reaction12
 * delta_ED_i_rxn14 in component reaction14
 * delta_ED_i_rxn15 in component reaction15
 * delta_ENaD_rxn11 in component reaction11
 * delta_ENaD_rxn13 in component reaction13
 * delta_ENaD_i_rxn14 in component reaction14
 * delta_ENaD_i_rxn16 in component reaction16
 * delta_ENa_rxn1 in component reaction1
 * delta_ENa_rxn3 in component reaction3
 * delta_ENa_rxn13 in component reaction13
 * delta_ENa_i_rxn5 in component reaction5
 * delta_ENa_i_rxn7 in component reaction7
 * delta_ENa_i_rxn16 in component reaction16
 * delta_ECl_rxn2 in component reaction2
 * delta_ECl_rxn4 in component reaction4
 * delta_ECl_i_rxn6 in component reaction6
 * delta_ECl_i_rxn8 in component reaction8
 * delta_ENaCl_rxn3 in component reaction3
 * delta_ENaCl_rxn4 in component reaction4
 * delta_ENaCl_rxn10 in component reaction10
 * delta_ENaCl_i_rxn7 in component reaction7
 * delta_ENaCl_i_rxn8 in component reaction8
 * delta_ENaCl_i_rxn10 in component reaction10
 * delta_Na_rxn1 in component reaction1
 * delta_Na_rxn4 in component reaction4
 * delta_Na_rxn11 in component reaction11
 * delta_Na_i_rxn8 in component reaction8
 * delta_Na_i_rxn14 in component reaction14
 * delta_Na_i_rxn5 in component reaction5
 * delta_Cl_rxn2 in component reaction2
 * delta_Cl_rxn3 in component reaction3
 * delta_Cl_i_rxn6 in component reaction6
 * delta_Cl_i_rxn7 in component reaction7
 * delta_D_rxn12 in component reaction12
 * delta_D_rxn13 in component reaction13
 * delta_D_i_rxn16 in component reaction16
 * delta_D_i_rxn15 in component reaction15
 * rate in component reaction1
 * rate in component reaction2
 * rate in component reaction3
 * rate in component reaction4
 * rate in component reaction5
 * rate in component reaction6
 * rate in component reaction7
 * rate in component reaction8
 * rate in component reaction9
 * rate in component reaction10
 * rate in component reaction11
 * rate in component reaction12
 * rate in component reaction13
 * rate in component reaction14
 * rate in component reaction15
 * rate in component reaction16
 * d/dt E in component E
 * d/dt E_i in component E_i
 * d/dt ED in component ED
 * d/dt ED_i in component ED_i
 * d/dt ENaD in component ENaD
 * d/dt ENaD_i in component ENaD_i
 * d/dt ENa in component ENa
 * d/dt ENa_i in component ENa_i
 * d/dt ECl in component ECl
 * d/dt ECl_i in component ECl_i
 * d/dt ENaCl in component ENaCl
 * d/dt ENaCl_i in component ENaCl_i
 * d/dt Na in component Na
 * d/dt Na_i in component Na_i
 * d/dt Cl in component Cl
 * d/dt Cl_i in component Cl_i
 * d/dt D in component D
 * d/dt D_i in component D_i