preferred_name: a penicillin + H2O = 6-aminopenicillanate + a carboxylate
preferred_name_lc: a penicillin + h2o = 6-aminopenicillanate + a carboxylate
label: a penicillin + H2O = 6-aminopenicillanate + a carboxylate
label_lc: a penicillin + h2o = 6-aminopenicillanate + a carboxylate