(SP-4-2)-(N,N'-Bis(3-aminopropyl)-1,4-butanediamine-N,N',N'',N''')platinum(2+) dichloride 62905-36-6 Platinum(2+), (N,N'-bis(3-aminopropyl)-1,4-butanediamine-N,N',N'',N''')-, dichloride, (SP-4-2)-