Model is underconstrained.
The following variables couldn't be defined:
 * Glc_i in component Glc_i
 * V_HK in component V_HK
 * V_glucose_transport in component V_glucose_transport
 * Glc_6_P in component Glc_6_P
 * Fru_6_P in component Fru_6_P
 * V_PFK in component V_PFK
 * V_ALD in component V_ALD
 * GA_3_P in component GA_3_P
 * DHAP in component DHAP
 * V_GAPDH in component V_GAPDH
 * V_GDH in component V_GDH
 * V_GPO in component V_GPO
 * V_PGK in component V_PGK
 * three_PGA in component three_PGA
 * two_PGA in component two_PGA
 * V_PYK in component V_PYK
 * PEP in component PEP
 * V_pyruvate_transport in component V_pyruvate_transport
 * pyruvate_o in component pyruvate_o
 * glycerol in component glycerol
 * V_GK in component V_GK
 * H2O in component H2O
 * O2 in component O2
 * NAD in component NAD
 * V_ATP_utilisation in component V_ATP_utilisation
 * ATP in component ATP
 * P in component ATP
 * ADP in component ADP
 * AMP in component AMP
 * KM_PEP in component V_PYK
 * KM_Fru_1_6_BP in component V_ALD
 * d/dt Glc_i in component Glc_i
 * d/dt hexose_P in component hexose_P
 * d/dt Fru_1_6_BP in component Fru_1_6_BP
 * d/dt triose_P in component triose_P
 * d/dt one_three_BPGA in component one_three_BPGA
 * d/dt N in component N
 * d/dt pyruvate_i in component pyruvate_i
 * d/dt Gly_3_P in component Gly_3_P
 * d/dt NADH in component NADH
 * d/dt P in component P