octadecanoyl-[ACP] + malonyl-[ACP] + H(+) <=> 3-oxoeicosanoyl-[ACP] + holo-[ACP] + CO2
octadecanoyl-[acp] + malonyl-[acp] + h(+) <=> 3-oxoeicosanoyl-[acp] + holo-[acp] + co2
octadecanoyl-[ACP] + malonyl-[ACP] + H(+) <=> 3-oxoeicosanoyl-[ACP] + holo-[ACP] + CO2
octadecanoyl-[acp] + malonyl-[acp] + h(+) <=> 3-oxoeicosanoyl-[acp] + holo-[acp] + co2