preferred_name: N-acetyl-L-cysteine + fumarate => N-acetyl-S-(2-succino)-L-cysteine
preferred_name_lc: n-acetyl-l-cysteine + fumarate => n-acetyl-s-(2-succino)-l-cysteine
label: N-acetyl-L-cysteine + fumarate => N-acetyl-S-(2-succino)-L-cysteine
label_lc: n-acetyl-l-cysteine + fumarate => n-acetyl-s-(2-succino)-l-cysteine