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(Alphar,betar)-beta-(2,5-difluorophenyl)-beta-hydroxy-alpha-methyl-1h-1,2,4-triazole-1-butanamide

N-methyl-n-(3-[((n-tert-butoxycarbonyl-n-methylamino)acetoxy)methyl]pyridin-2-yl)carbamic acid 1-chloroethyl ester