The model contains one compartment called "compartment". There are three species named S1, S2 and S3 and two parameters named k1 and k2. Both species S2 and S3 are labeled as an SBML boundary species. The model contains one reaction defined as:

Reaction Rate
S1 → S2 k1 · S1 · compartment

The model contains one rule:

Type Variable Formula
Rate S3 k1 · k2

The initial conditions are as follows:

Value Units
Initial amount of S1 1.5 × 10−1 mole
Initial amount of S2 1.0 × 10−1 mole
Initial amount of S3 1.0 × 10−1 mole
Value of parameter k1 1.75 second-1
Value of parameter k2 1.5 × 10−2 mole
Volume of compartment "compartment" 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.

Note: The test data for this model was generated from an analytical solution of the system of equations.