58081-69-9 Copper(2+), (1,4,7,10-tetraazacyclododecane-N(sup 1),N(sup 4),N(sup 7),N(sup 10))-, dichloride Copper, dichloro(1,4,7,10-tetraazacyclododecyl)- Dichloro(1,4,7,10-tetraazacyclododecyl)copper