k1 = Open_probability k2 = compartment k3 = __lp_r2_ka_minus k4 = __lp_r2_ka_plus k5 = __lp_r2_Ca k6 = __lp_r2_n k7 = __lp_r3_kb_plus k8 = __lp_r3_Ca k9 = __lp_r3_m k10 = __lp_r3_kb_minus k11 = __lp_r4_kc_plus k12 = __lp_r4_kc_minus k13 = __cm_k13