6-(Phenoxymethyl)-3-phenyl[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole 83676-82-8 AIDS-129791 AIDS129791 NSC366796 Phenyl (3-phenyl[1,2,4]triazolo[3,4-b][1,3,4]thiadiazol-6-yl)methyl ether