k1 = parameter_1
k2 = parameter_2
k3 = parameter_3
k4 = parameter_4
k5 = parameter_5
k6 = parameter_6
k7 = parameter_8
k8 = parameter_10
k9 = parameter_11
k10 = parameter_14
k11 = parameter_16
k12 = parameter_7
k13 = parameter_9
k14 = parameter_13
k15 = parameter_17
k16 = parameter_18
k17 = compartment_1
k18 = species_5
k19 = species_7
k20 = species_8
k21 = species_11