species
(
    O2
    H2O
    C7H16
    CO2
    N2
);

reactions
{
    HepthaneReaction
    {
        type irreversibleinfiniteReaction;
        //reaction     "C3H8 + 5O2 + 18.8N2 = 3CO2 + 4H2O + 18.8N2";
        reaction "C7H16 + 11O2 + 41.36N2 = 7CO2 + 8H2O + 41.36N2";
    }
}
