2-hydroxybenzoyl-CoA + malonyl-CoA <=> 4-hydroxycoumarin + CO2 + 2 CoA
2-hydroxybenzoyl-coa + malonyl-coa <=> 4-hydroxycoumarin + co2 + 2 coa
2-hydroxybenzoyl-CoA + malonyl-CoA <=> 4-hydroxycoumarin + CO2 + 2 CoA
2-hydroxybenzoyl-coa + malonyl-coa <=> 4-hydroxycoumarin + co2 + 2 coa