149986-18-5 3,12-Diaza-6,9-diazoniadispiro(5.2.5.2)hexadecane, 3,12-bis(1-(hydroxyimino)-2-oxopropyl)-, dichloride N,N'''-Bis(1-hydroxyimino-2-oxopropyl)-N',N''-dispirotripiperazinium dichloride