k1 = 6.6e-07 
k2 = 1600000000 
k3 = 1600000000 
k4 = 100000 
k5 = 20000 
k6 = 1 
k7 = 34000000 
k8 = 1000000 
k9 = 1000 
k10 = 250000000 
k11 = 0.38 
k12 = 0.0087 
k13 = 0.0087 
k14 = 30000 
k15 = 7 
k16 = 88000 
k17 = 0 
k18 = 0 
k19 = 1 
k20 = 1e-05 
k21 = 1e-05