英文名：cyclo(Glu-Glu) L-glutamic acid dimer 2,5-Piperazinedipropanoicacid,3,6-dioxo-,(2S,5S) cyclo(L-Glu-L-Glu) 2,5-Piperazinedipropanoicacid,3,6-dioxo-,(2S-cis) cyclo-(glutamyl-glutamyl) 2,5-Piper