{6-Chloro-3-[7-[(R)-2-(3-cyano-azetidin-1-yl)-1-methyl-2-oxo-ethylcarbamoyl]-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazin-2-yl]-indazol-1-yl}-acetic acid tert-butyl ester (HCID 71279425)|Huagongshe