英文别名
                        1,3,1',3'-tetramethyl-7,7'-bis-(2-oxo-propyl)-3,7,3',7'-tetrahydro-8,8'-sulfanediyl-bis-purine-2,6-dione;Bis(7-acetonyl-8-theophyllinyl) sulfide;8-[1,3-dimethyl-2,6-dioxo-7-(2-oxopropyl)purin-8-yl]sulfanyl-1,3-dimethyl-7-(2-oxopropyl)purine-2,6-dione