118574-84-8 Cyclohexyldiamine-9-methylguanine platinum IV Dach-mgua-pt Platinum IV cyclohexyldiamine-9-methylguanine chlorate Platinum(2+), bis(2-amino-1,9-dihydro-9-methyl-6H-purin-6-one-N7)(1,2-cyclohexanediamine-N,N')-, (SP-4-2-(trans))-, diperchlorate