4-[1-[3-(氰基甲基)-1-(乙基磺酰基)氮杂环丁烷-3-基]-1H-吡唑-4-基]-7H-吡咯并[2,3-d]嘧啶-7-羧酸叔丁酯

4-[1-[3-(cyanomethyl)-1-(ethylsulfonyl)-3-azetidinyl]-1H-pyrazol-4-yl]-7H-pyrrolo[2,3-d]pyrimidine-7-carboxylic acid 1,1-dimethylethyl ester