label: an ultra-long-chain di-unsaturated fatty acyl-[ACP] + malonyl-[ACP] + H(+) <=> a 3-oxo-ultra-long-chain di-unsaturated fatty acyl-[ACP] + holo-[ACP] + CO2
label_lc: an ultra-long-chain di-unsaturated fatty acyl-[acp] + malonyl-[acp] + h(+) <=> a 3-oxo-ultra-long-chain di-unsaturated fatty acyl-[acp] + holo-[acp] + co2