preferred_name: (2S)-2-methylbutanoyl-CoA + malonyl-[ACP] + H(+) => (4S)-4-methyl-3-oxohexanoyl-[ACP] + CO2 + CoA
preferred_name_lc: (2s)-2-methylbutanoyl-coa + malonyl-[acp] + h(+) => (4s)-4-methyl-3-oxohexanoyl-[acp] + co2 + coa
label: (2S)-2-methylbutanoyl-CoA + malonyl-[ACP] + H(+) => (4S)-4-methyl-3-oxohexanoyl-[ACP] + CO2 + CoA
label_lc: (2s)-2-methylbutanoyl-coa + malonyl-[acp] + h(+) => (4s)-4-methyl-3-oxohexanoyl-[acp] + co2 + coa