AIDS-108839 AIDS108839 N-(1,3-Dimethyl-4-oxo-1,4-dihydro-5lambda~5~-[1,3,4]thiadiazolo[2,3-c][1,2,4]triazin-7-yl)-N'-(2,6-dimethyl-5-oxo-3-thioxo-2,5-dihydro-1,2,4-triazin-4(3H)-yl)-N,N''-bis(4-methoxyphenyl)guanidine NSC655067