The model contains one compartment called C. There are three species called S1, S2 and S3 and one global parameter called k. The model contains two reactions defined as:

Reaction Rate
S1 → S2 k · S1 · C
S2 → S3 S1 · S2 · C

Reaction S2 → S3 defines one local parameter S1.

Note that the id of the local parameter S1 shadows the species S1. Within the defining reaction, the value of the locally-defined symbol S1 must be used.

The initial conditions are as follows:

Value Units
Initial concentration of S1 3.0 × 10−2 mole litre-1
Initial concentration of S2 0 mole litre-1
Initial concentration of S3 0 mole litre-1
Value of parameter k 2 second-1
Value of local parameter S1 1 second-1
Volume of compartment C 1 litre