The model contains one compartment called "compartment". There are four species named S1, S2, S3 and S4 and two parameters named k1 and k2. Compartment "compartment" is 1-dimensional. The model contains two reactions defined as:

Reaction | Rate
S1 + S2 → S3 + 2S4 | k1 · S1 · S2 · compartment
S3 + S4 → S1 + S2 | k2 · S3 · S4 · compartment

The initial conditions are as follows:

| Value | Units
Initial amount of S1 | 1.0 × 10−6 | mole
Initial amount of S2 | 0.5 × 10−6 | mole
Initial amount of S3 | 2.0 × 10−6 | mole
Initial amount of S4 | 0 | mole
Value of parameter k1 | 0.9 × 106 | metre mole-1 second-1
Value of parameter k2 | 0.15 × 106 | metre mole-1 second-1
Length of compartment "compartment" | 1 | metre

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.