1: Galpha_act{Galpha_act/-1:-1/-1:-1}
2: Galpha{Galpha/-1:-1/-1:-1}
3: Ligand{Lig/-1:-1}
4: Receptor{Rec<Rec_intra>/-1:-1/-1:-1}
5: {Rec<Rec_intra_act>/-1:-1/-1:-1}
6: Lig_Receptor{Lig/0:1|Rec<Rec_intra_act>/0:0/-1:-1}
7: {Galpha/1:1/-1:-1|Rec<Rec_intra_act>/-1:-1/0:0}
8: {Galpha/1:2/-1:-1|Lig/0:2|Rec<Rec_intra_act>/0:1/0:0}

ydot(1) =  + 100*y(7) + 100*y(8)
ydot(2) =  - 100000*y(2)*y(6) - 100000*y(2)*y(5) + 0.01*y(7) + 0.01*y(8)
ydot(3) =  - 1e+06*y(3)*y(4) - 1e+06*y(3)*y(5) - 1e+06*y(3)*y(7) + 0.01*y(6) + 0.01*y(6) + 0.01*y(8)
ydot(4) =  - 1e+06*y(4)*y(3) + 0.01*y(6)
ydot(5) =  - 1e+06*y(5)*y(3) - 100000*y(5)*y(2) + 100*y(7) + 0.01*y(6) + 0.01*y(7)
ydot(6) =  - 100000*y(6)*y(2) - 0.01*y(6) - 0.01*y(6) + 1e+06*y(3)*y(4) + 1e+06*y(3)*y(5) + 100*y(8) + 0.01*y(8)
ydot(7) =  - 1e+06*y(7)*y(3) - 0.01*y(7) + 100000*y(2)*y(5) - 100*y(7) + 0.01*y(8)
ydot(8) =  - 0.01*y(8) - 0.01*y(8) + 100000*y(2)*y(6) + 1e+06*y(3)*y(7) - 100*y(8)