Structure:

CAS Number: 14636-12-5 (net)
Molecular formula:  C52H74N16O15S2
Molar mass: 1227.39   
Sequence: H-Gly-Gly-Gly-Cys-Tyr-Phe-Gln-Asn-Cys-Pro-Lys-Gly-NH2 acetate salt (Disulfide bond)
Medical use: Acute varicose veins hemorrhage (esophageal varicose veins)