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