preferred_name: S-ethyl-L-cysteine => ethanethiol + 2-aminoprop-2-enoate
preferred_name_lc: s-ethyl-l-cysteine => ethanethiol + 2-aminoprop-2-enoate
label: S-ethyl-L-cysteine => ethanethiol + 2-aminoprop-2-enoate
label_lc: s-ethyl-l-cysteine => ethanethiol + 2-aminoprop-2-enoate