label: (9Z,12Z,15Z,18Z,21Z)-tetracosapentaenoyl-CoA + malonyl-CoA + H(+) <=> 3-oxo-(11Z,14Z,17Z,20Z,23Z)-hexacosapentaenoyl-CoA + CO2 + CoA
label_lc: (9z,12z,15z,18z,21z)-tetracosapentaenoyl-coa + malonyl-coa + h(+) <=> 3-oxo-(11z,14z,17z,20z,23z)-hexacosapentaenoyl-coa + co2 + coa