1H-Purine-2,6-dione, 3,7-dihydro-8-(2-chloro-2-butenyl)-3-methyl-8-(4-morpholinyl)- 8-(2-Chloro-2-butenyl)-3-methyl-8-(4-morpholinyl)purine-2,6(1H,3H)-dione UO8413100