N-acetyl-S-(2-succino)-L-cysteine = N-acetyl-L-cysteine + fumarate
n-acetyl-s-(2-succino)-l-cysteine = n-acetyl-l-cysteine + fumarate
N-acetyl-S-(2-succino)-L-cysteine = N-acetyl-L-cysteine + fumarate
n-acetyl-s-(2-succino)-l-cysteine = n-acetyl-l-cysteine + fumarate