preferred_name: 1-propanol + butanoyl-CoA => propyl butanoate + CoA
preferred_name_lc: 1-propanol + butanoyl-coa => propyl butanoate + coa
label: 1-propanol + butanoyl-CoA => propyl butanoate + CoA
label_lc: 1-propanol + butanoyl-coa => propyl butanoate + coa