preferred_name: a long chain fatty alcohol + a long-chain fatty acid + H(+) => a wax ester + H2O
preferred_name_lc: a long chain fatty alcohol + a long-chain fatty acid + h(+) => a wax ester + h2o
label: a long chain fatty alcohol + a long-chain fatty acid + H(+) => a wax ester + H2O
label_lc: a long chain fatty alcohol + a long-chain fatty acid + h(+) => a wax ester + h2o