(4,7-bis-carboxymethyl-10-(1-(2-(5-(2-oxohexahydrothieno(3,4-d)imidazol-6-yl)-pentanoylamino)ethyl)-1H-(1,2,3)triazol-4-ylmethyl)-1,4,7,10-tetraazacyclododec-1-yl)acetic acid
(4,7-bis-carboxymethyl-10-(1-(2-(5-(2-oxohexahydrothieno(3,4-d)imidazol-6-yl)-pentanoylamino)ethyl)-1h-(1,2,3)triazol-4-ylmethyl)-1,4,7,10-tetraazacyclododec-1-yl)acetic acid