ethyl[(4S)-6-(4-chlorophenyl)-8-hydroxy-1-methyl-4H-[1,2,4]triazolo[4,3-a][1,4]benzodiazepin-4-yl]acetate

ethyl ((4S)-6-(4-chlorophenyl)-1-methyl-8-{[(trifluoromethyl)sulfonyl]oxy}-4H-[1,2,4]triazolo[4,3-a][1,4]benzodiazepin-4-yl)acetate