preferred_name: an S-substituted L-cysteine + acetate => an N-acetyl-L-cysteine-S-conjugate + H2O
preferred_name_lc: an s-substituted l-cysteine + acetate => an n-acetyl-l-cysteine-s-conjugate + h2o
label: an S-substituted L-cysteine + acetate => an N-acetyl-L-cysteine-S-conjugate + H2O
label_lc: an s-substituted l-cysteine + acetate => an n-acetyl-l-cysteine-s-conjugate + h2o