英文名称
(2R)-2-[3-[2-[2-[2-[2-[3-[[3-[3-[3-[[2-[4-(carboxymethyl)-7,10-dimethyl-1,4,7,10-tetrazacyclododec-1-yl]acetyl]amino]propyl]-3,4,5,13-tetrazatetracyclo[13.4.0.02,6.07,12]nonadeca-1(19),2(6),4,7,9,11,15,17-octaen-13-yl]-3-oxopropyl]amino]-3-oxopropoxy]ethoxy]ethoxy]ethoxy]ethoxy]propanoylamino]butanoic acid