k1 = parameter_0
k2 = parameter_1
k3 = parameter_2
k4 = parameter_3
k5 = parameter_4
k6 = parameter_5
k7 = parameter_6
k8 = parameter_7
k9 = parameter_8
k10 = parameter_9
k11 = parameter_10
k12 = parameter_11
k13 = parameter_12
k14 = parameter_13
k15 = parameter_14
k16 = parameter_15
k17 = parameter_16
k18 = parameter_17
k19 = parameter_18
k20 = parameter_19
k21 = compartment_0