(11Z)-octadecenoyl-CoA + malonyl-CoA + H(+) = 3-oxo-(13Z)-eicosenoyl-CoA + CO2 + CoA
(11z)-octadecenoyl-coa + malonyl-coa + h(+) = 3-oxo-(13z)-eicosenoyl-coa + co2 + coa
(11Z)-octadecenoyl-CoA + malonyl-CoA + H(+) = 3-oxo-(13Z)-eicosenoyl-CoA + CO2 + CoA
(11z)-octadecenoyl-coa + malonyl-coa + h(+) = 3-oxo-(13z)-eicosenoyl-coa + co2 + coa