butanoyl-[ACP] + malonyl-[ACP] + H(+) = 3-oxohexanoyl-[ACP] + holo-[ACP] + CO2
butanoyl-[acp] + malonyl-[acp] + h(+) = 3-oxohexanoyl-[acp] + holo-[acp] + co2
butanoyl-[ACP] + malonyl-[ACP] + H(+) = 3-oxohexanoyl-[ACP] + holo-[ACP] + CO2
butanoyl-[acp] + malonyl-[acp] + h(+) = 3-oxohexanoyl-[acp] + holo-[acp] + co2