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 0-dimensional. The model contains one reaction defined as:

Reaction Rate
S1 → S2 k1 · S1

The model contains two rules:

Type Variable Formula
Rate S3 k1 · 0.5
Rate S4 −k2 · 0.5

The initial conditions are as follows:

Value Units
Initial amount of S1 1.5 mole
Initial amount of S2 2.0 mole
Initial amount of S3 1.5 mole
Initial amount of S4 4 mole
Value of parameter k1 0.75 second-1
Value of parameter k2 0.25 second-1

In this example the compartment has its spatialDimensions attribute set to zero; i.e., it represents a point and therefore cannot have size or units. The species values must be treated as amounts and not concentrations.

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