preferred_name: S-(4-hydroxy-3-methylbutan-2-yl)-L-cysteine = 2-methyl-3-sulfanylbutan-1-ol + 2-aminoprop-2-enoate
preferred_name_lc: s-(4-hydroxy-3-methylbutan-2-yl)-l-cysteine = 2-methyl-3-sulfanylbutan-1-ol + 2-aminoprop-2-enoate
label: S-(4-hydroxy-3-methylbutan-2-yl)-L-cysteine = 2-methyl-3-sulfanylbutan-1-ol + 2-aminoprop-2-enoate
label_lc: s-(4-hydroxy-3-methylbutan-2-yl)-l-cysteine = 2-methyl-3-sulfanylbutan-1-ol + 2-aminoprop-2-enoate