label: 1-(beta-mercapto-beta,beta-cyclopentamethylenepropionic acid)-2-(O-ethyl-Tyr)-4-Val-arginine vasopressin
label_lc: 1-(beta-mercapto-beta,beta-cyclopentamethylenepropionic acid)-2-(o-ethyl-tyr)-4-val-arginine vasopressin