preferred_name: butan-1-ol + propanoyl-CoA <=> butyl propanoate + CoA
preferred_name_lc: butan-1-ol + propanoyl-coa <=> butyl propanoate + coa
label: butan-1-ol + propanoyl-CoA <=> butyl propanoate + CoA
label_lc: butan-1-ol + propanoyl-coa <=> butyl propanoate + coa