2,1-Benzoxathiin-3-carboxamide, N-(3-(diethylamino)propyl)-3,4-dihydro-6,7-dimethoxy-, 1,1-dioxide 3-(3'-Diethylaminopropyl-(1')-carbamoyl)-6,7-dimethoxy-1-thiaisochroman-1,1-dioxide 35423-52-0