ethyl 5-cyano-6-[2-[[(2R,3R)-1-methoxy-3-methyl-1-oxopentan-2-yl]amino]-2-oxoethyl]sulfanyl-2-methylpyridine-3-carboxylate
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ethyl 5-cyano-6-[2-[[(2R,3R)-1-methoxy-3-methyl-1-oxopentan-2-yl]amino]-2-oxoethyl]sulfanyl-2-methylpyridine-3-carboxyla