Name: 5H-1,3-DIOXOLO4,5-CPYRROLE-5-CARBOXYLIC ACID 4-(6-CHLORO-9H-PURIN-9-YL)METHYL-6-(TERT-BUTYL)DIMETHYLSILYLOXYMETHYLTETRAHYDRO-2,2-DIMETHYL-,TERT-BUTYL