1,4,7,10-Tetraazacyclododecane-1,4,7,10-tetraethanol, alpha,alpha',alpha'',alpha'''-tetramethyl-, (alphaR*,alpha'R*,alpha''R*,alpha'''R*)- 119167-08-7 N,N',N'',N'''-Tetrakis(2-hydroxypropyl)-1,4,7,10-tetraazacyclododecane N,N',N'',N'''-Tetrakis(2-hydroxypropyl)1,4,7,10-tetraazacyclododecane Thp-12-ane N4