label: (15Z,18Z,21Z,24Z)-triacontatetraenoyl-CoA + malonyl-CoA + H(+) <=> 3-oxo-(17Z,20Z,23Z,26Z)-dotriacontatetraenoyl-CoA + CO2 + CoA
label_lc: (15z,18z,21z,24z)-triacontatetraenoyl-coa + malonyl-coa + h(+) <=> 3-oxo-(17z,20z,23z,26z)-dotriacontatetraenoyl-coa + co2 + coa