begin parameters Stot 100 n_k0 0 kp0 3 ku1 14 n_k1 1 kp1 15 ku2 98 end parameters begin molecule types A(s1~u~p) end molecule types begin seed species %init: A(s1~u) Stot end seed species begin reaction rules A(s1~p) -> A(s1~u) ku1 A(s1~u) -> A(s1~p) kp0 end reaction rules generate_network({overwrite=>1});