139280-49-2 2,2'-Bipyridine-alpha,alpha'-diaminosuberic acid platinum(II) Bds-Pt Platinum(2+), bis(2,2'-bipyridine-N,N')(mu-(2,7-diaminooctanedioato(2-)-N2,O1:N7,O8))di-, dichloride Pt(II)2(Bipy)2(dsa)Cl2