The model contains two compartments named "compartment" and "compartment1". There are two species named S1 and S3 and two parameters named k1 and k2. Compartment "compartment" contains species S1. Compartment "compartment1" contains species S3. The model contains two reactions defined as:

Reaction Rate
S1 → S3 k1 · S1 · compartment
S3 → S1 k2 · (S3−S1) · compartment1

Both reactions occur between species within different compartments.

The initial conditions are as follows:

Value Units
Initial amount of S1 1.0 mole
Initial amount of S3 0 mole
Value of parameter k1 0.75 second-1
Value of parameter k2 0.25 second-1
Volume of compartment "compartment" 1 litre
Volume of compartment "compartment"1 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.