The model contains one compartment called C. There are two species called S1 and S2 and one parameter called k. The model contains one reaction that has a kinetic law that defines first order mass action kinetics (as referenced by SBO:0000049):

Reaction Rate
S1 → S2 k · S1 · C

The initial conditions are as follows:

Value Units
Initial amount of S1 1.0 mole
Initial amount of S2 0 mole
Value of parameter k 2.5 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.

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