2-amino-4-[(2-{[2-(4-amino-4-carboxybutanamido)-2-[(carboxymethyl)carbamoyl]ethyl]disulfanyl}-1-[(carboxymethyl)carbamoyl]ethyl)carbamoyl]butanoic acid

2-amino-4-[(2-{[2-(4-amino-4-carboxybutanamido)-2-[(carboxymethyl)carbamoyl]ethyl]disulfanyl}-1-[(carboxymethyl)carbamoyl]ethyl)carbamoyl]butanoic acid