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

Reaction Rate
S1 → S2 C · k · S

Reaction S1 → S2 defines one local parameter k which has a scope local to the defining reaction.

The model contains one rule:

Type Variable Formula
Assignment S3 k · S2

The initial conditions are as follows:

Value Units
Initial amount of S1 1 mole
Initial amount of S2 0 mole
Initial amount of S3 1 mole
Value of parameter k 0.75 dimensionless
Value of local parameter k 5 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.