phlorisobutanophenone + 3 CO2 + 4 CoA => 2-methylpropanoyl-CoA + 3 malonyl-CoA + 3 H(+)
phlorisobutanophenone + 3 co2 + 4 coa => 2-methylpropanoyl-coa + 3 malonyl-coa + 3 h(+)
phlorisobutanophenone + 3 CO2 + 4 CoA => 2-methylpropanoyl-CoA + 3 malonyl-CoA + 3 H(+)
phlorisobutanophenone + 3 co2 + 4 coa => 2-methylpropanoyl-coa + 3 malonyl-coa + 3 h(+)