The model contains one compartment called C. There are three species called S1, S2 and S3 and three parameters called kf, kr and p1. The model contains one reaction defined as:

Reaction Rate
S1 + S2 ↔ S3 (kf · S1 · S2 − kr · S3) · C

The model contains one initialAssignment:

Variable Formula
S1 p1 · 2

Note: SBML's InitialAssignment construct override any declared initial values. In this case the initial value declared for species S1 is consistent with the value returned by the InitialAssignment.

The initial conditions are as follows:

Value Units
Initial amount of S1 1.0 mole
Initial amount of S2 0.5 mole
Initial amount of S3 0 mole
Value of parameter kf 1.1 litre mole-1 second-1
Value of parameter kr 0.09 second-1
Value of parameter p1 0.5 mole
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.