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