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