The model contains one compartment called C. There are three species called S1, S2 and S3 and two parameters called k1 and k2. Species S3 is labeled a constant species. The model contains one reaction defined as:

Reaction Rate
S1 → S2 C · k2 · S1 · S3

The model contains one initialAssignment:

Variable Formula
S3 k1 · S2

Note: SBML's InitialAssignment construct override any declared initial values. In this model, the initial value for the species S3 has not been explicitly declared and must be calculated using the InitialAssignment.

The initial conditions are as follows:

Value Units
Initial amount of S1 1 mole
Initial amount of S2 1.5 mole
Initial amount of S3 undeclared mole
Value of parameter k1 0.75 dimensionless
Value of parameter k2 2.7 litre mole-1 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.