label: 1,3-dihydroxy-N-methylacridone + 3 CO2 + 4 CoA + H2O => N-methylanthraniloyl-CoA + 3 malonyl-CoA + 3 H(+)
label_lc: 1,3-dihydroxy-n-methylacridone + 3 co2 + 4 coa + h2o => n-methylanthraniloyl-coa + 3 malonyl-coa + 3 h(+)