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 defined as:

Reaction Rate
S1 → S2 C · k · S1

Reaction S1 → S2 defines one local parameter k. Note that this parameter has a scope local to the defining reaction.

The model contains one initialAssignment:

Variable Formula
C k50

Note: SBML's InitialAssignment construct override any declared initial values. In this model, the initial value for compartment C has not been explicitly declared and must be calculated using the InitialAssignment.

The initial conditions are as follows:

Value Units
Initial amount of S1 1 mole
Initial amount of S2 1.5 mole
Value of parameter k 50 litre
Value of local parameter k 0.5 second-1
Volume of compartment C undeclared 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) they must be treated as concentrations where they appear in expressions.