k1 = 0.01 
k2 = 1000 
k3 = 10000 
k4 = 0.2 
k5 = 10000000 
k6 = 200000 
k7 = 0.2 
k8 = 10000000 
k9 = 0.02 
k10 = 1 
k11 = 0 
k12 = 1 
k13 = 1 
k14 = 1.3e-07 
k15 = 2.2e-07 
k16 = 5e-08 
k17 = 1.3e-07