5,5-Dimethyl-4,5,7,8-tetrahydro-6H-thiochromeno[7,8-d][1,2,3]thiadiazol-6-one AIDS-132405 AIDS132405 NSC626118 {5H-Thiopyrano[3,2-g][1,2,3]benzothiadiazole-7-one,} 6,7,8, 9-tetrahydro-8,8-dimethyl-