k1 = mu_c
k2 = mu_m
k3 = delta_m
k4 = delta_h
k5 = delta_c
k6 = kappa_m
k7 = kappa_c
k8 = x
k9 = y
k10 = HMGCR_Rescaled
k11 = mRNA_Rescaled
k12 = compartment