Hello,
there are several issues with the reaction schemes entered in the model. When entering reactions be sure to add spaces after specifying the stoichiometry. And when writing different compounds. For example: For reaction 7 instead of writing:
2OrH -> H2O2
it should be:
2 * OrH -> H2O2
Also in Reaction 15 instead of:
HO2r + H2O2 -> OrH + H2O+O2
it should be:
HO2r + H2O2 -> OrH + H2O + O2
Since COPASI allows numbers and symbols in names, otherwise new species will be created.
Without seeing the original publication it is difficult to say more about the dynamic behavior.
best
Frank