英文名：cyclo(L-phenylalanyl-L-histidine) Cyclo(His-Phe) cyclo[L-Phe-L-His] cyclo-(L-phenylalanyl-L-histidyl) Cyclo(histidylphenylalanine) cyclo<-(S)-phenylalanyl-(S)-histidyl> (SS)-Cyclo- 3-benzyl