1-Benzyl-3-[(2-hydroxyethoxy)methyl]-6-phenyl-thienol[2,3-c][1,2,6]thiadiazin-4(3H)-one 2,2-dioxide 1-Benzyl-3-[2-(2-hydroxy-ethoxy)-ethyl]-2,2-dioxo-6-phenyl-2,3-dihydro-1H-2.lambda.6-thieno[2,3-c][1,2,6]thiadiazin-4-one AIDS-104969 AIDS104969