k1 = compartment
k2 = __lp_r2_k1
k3 = __lp_r3_k2
k4 = __lp_r4_k3
k5 = __lp_r5_k4
k6 = __lp_r6_k5
k7 = __lp_r7_k6
k8 = __lp_r8_k7
k9 = __lp_r9_k8
k10 = __lp_r10_k9
k11 = __lp_r11_k10
k12 = __lp_r12_k11
k13 = __lp_r13_k12
k14 = __lp_r14_k13
k15 = __lp_r15_k14
k16 = __lp_r16_k15
k17 = __lp_r17_k16
k18 = __cm_k18