Synonyms: 4-(4-Methoxyphenyl)-7,7-dimethyl-1-(methylsulfanyl)-6,9-dihydro-7H-pyrano[4',3':4,5]thieno[3,2-e][1,2,4]triazolo[4,3-a]pyrimidin-5(4H)-one;7H-Pyrano[4',3':4,5]thieno[3,2-e][1,2,4]triazolo[4,3-a]pyrimidin-5(4H)-one, 6,9-dihydro-4-(4-methoxyphenyl)-7,7-dimethyl-1-(methylthio)-