preferred_name: an aliphatic alcohol + octadecanoate + H(+) => octadecanoate ester + H2O
preferred_name_lc: an aliphatic alcohol + octadecanoate + h(+) => octadecanoate ester + h2o
label: an aliphatic alcohol + octadecanoate + H(+) => octadecanoate ester + H2O
label_lc: an aliphatic alcohol + octadecanoate + h(+) => octadecanoate ester + h2o