150747-52-7 Ass 51 Ass-51 L-Cysteinamide, N- ((1-mercaptocyclohexyl)acetyl)-L-phenylalanyl-D-tryptophyl-L-lysyl-L-threonyl-N-(2-hydroxy-1-(hydroxymethyl)-1-methylethyl)-, cyclic (1-5)-disulfide