Model is underconstrained.
The following variables couldn't be defined:
 * Ca_e in component extracellular_calcium
 * delta_Ca_e_rxn_1 in component Ca_influx_across_the_SR
 * r_rxn_1 in component Ca_influx_across_the_SR
 * delta_Ca_f_rxn_2 in component Ca_movement_through_the_SRRC
 * delta_S1_rxn_2 in component Ca_movement_through_the_SRRC
 * delta_Ca_2_S1_rxn_2 in component Ca_movement_through_the_SRRC
 * delta_Ca_f_rxn_3 in component Ca_movement_through_the_SRRC
 * delta_S2_rxn_3 in component Ca_movement_through_the_SRRC
 * delta_Ca_S2_rxn_3 in component Ca_movement_through_the_SRRC
 * dcas1_dt in component Ca_movement_through_the_SRRC
 * dcas2_dt in component Ca_movement_through_the_SRRC
 * r_o in component Ca_movement_through_the_SRRC
 * r_rxn_2 in component Ca_movement_through_the_SRRC
 * r_rxn_3 in component Ca_movement_through_the_SRRC
 * r_rxn_4 in component Ca_movement_through_the_SRRC
 * delta_Ca_e_rxn_5 in component Ca_efflux_across_the_SR_by_NaCa_exchange
 * r_rxn_5 in component Ca_efflux_across_the_SR_by_NaCa_exchange
 * r_rxn_6 in component Ca_movement_between_the_fuzzy_space_and_cytosol
 * r_rxn_7 in component Ca_uptake_by_SR_Ca_ATPase
 * delta_Ca_CSQ_rxn_8 in component Ca_buffering_in_the_SR
 * r_rxn_8 in component Ca_buffering_in_the_SR
 * Ca_f1 in component fuzzy_space_calcium
 * Ca_f2 in component fuzzy_space_calcium
 * dye_c in component cytosolic_calcium
 * Kb_dye in component cytosolic_calcium
 * Ca_f1 in component cytosolic_calcium
 * Ca_f2 in component cytosolic_calcium
 * d/dt cas1 in component Ca_movement_through_the_SRRC
 * d/dt cas2 in component Ca_movement_through_the_SRRC
 * d/dt Ca_f in component fuzzy_space_calcium
 * d/dt Ca_c in component cytosolic_calcium
 * d/dt Ca_s in component SR_calcium
 * d/dt Ca_e in component extracellular_calcium
 * d/dt Ca_CSQ in component calsequestrin_bound_calcium
 * d/dt S1 in component SRRC_fast_activating_binding_site
 * d/dt S2 in component SRRC_slow_inactivating_binding_site
 * d/dt Ca_2_S1 in component Ca_bound_to_the_SRRC_fast_activating_binding_site
 * d/dt Ca_S2 in component Ca_bound_to_the_SRRC_slow_inactivating_binding_site