193672-87-6 Cyclo(L-isoleucyl-L-valyl-L-prolyl-L-threonyl-L-phenylalanyl-L-tyrosyl-L-prolyl-L-leucyl) Cyclo(Val-Pro-Thr-Phe-Tyr-Pro-Leu-Ile) Cyclo(valyl-prolyl-threonyl-phenylalanyl-tyrosyl-prolyl-leucyl-isoleucyl) Dichotomin I