1-Piperidinecarboxylic acid, 3-[4-amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]-, 1,1-dimethylethyl ester, (3R)-

1-Piperidinecarboxylic acid, 3-[4-amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]-, 1,1-dimethylethyl ester, (3R)-