Theophylline,8-(dimethylamino);8-Dimethylamino-1,3-dimethyl-3,7-dihydro-purin-2,6-dion;8-dimethylamino-1,3-dimethyl-3,7-dihydro-purine-2,6-dione;8-Dimethylaminotheophylline;8-dimethylamino-1,3-dimethyl-3,7(9)-dihydro-purine-2,6-dione;
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