The model contains one compartment called C. There are four species called S1, S2, S3 and S4 and two parameters called k1 and k2. Species S4 is labeled as an SBML boundary species. The model contains two reactions defined as:

Reaction Rate
S1 + S2 → S3 + S4 k1 · S1 · S2 · C
S3 + S4 → S1 + S2 k2 · S3 · S4 · C

The initial conditions are as follows:

Value Units
Initial concentration of S1 1.0 × 10−2 mole litre-1
Initial concentration of S2 1.0 × 10−2 mole litre-1
Initial concentration of S3 2.0 × 10−2 mole litre-1
Initial concentration of S4 1.0 × 10−2 mole litre-1
Value of parameter k1 0.75 × 102 litre mole-1 second-1
Value of parameter k2 0.25 × 102 litre mole-1 second-1
Volume of compartment C 1 litre