The model contains one compartment called C. There are two species called S1 and S2 and two parameters called kf and kr. The model contains one reaction defined as:

Reaction Rate
S1 ↔ 2S2 (kf · S1 − kr · S2) · C

The initial conditions are as follows:

Value Units
Initial amount of S1 1.0 mole
Initial amount of S2 0 mole
Value of parameter kf 0.9 second-1
Value of parameter kr 0.075 second-1
Volume of compartment C 1 litre

The species values are given as amounts of substance to make it easier to use the model in a discrete stochastic simulator, but (as per usual SBML principles) their symbols represent their values in concentration units where they appear in expressions.