preferred_name: a phenol + acetate + H(+) => a phenyl acetate + H2O
preferred_name_lc: a phenol + acetate + h(+) => a phenyl acetate + h2o
label: a phenol + acetate + H(+) => a phenyl acetate + H2O
label_lc: a phenol + acetate + h(+) => a phenyl acetate + h2o