preferred_name: an alpha-amino acid + an alcohol + H(+) => an alpha-amino acid ester + H2O
preferred_name_lc: an alpha-amino acid + an alcohol + h(+) => an alpha-amino acid ester + h2o
label: an alpha-amino acid + an alcohol + H(+) => an alpha-amino acid ester + H2O
label_lc: an alpha-amino acid + an alcohol + h(+) => an alpha-amino acid ester + h2o