120721-77-9 Gadolinate(5-), (((1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrayltetrakis(methylene))tetrakis(phoephonato))(8)-N,N',N'',N''',OP,O',OP'',OP''')- Gadolinium-1,4,7,10-tetraazacyclododecane-N,N',N'',N'''-tetrakis(methylenephosphonic acid) Gd-Dotp