1,8-Diazaspiro[4.5]decane-8-carboxylic acid, 3-hydroxy-1-(phenylmethyl)-, 1,1-dimethylethyl ester

1,8-二氮杂螺[4.5]癸烷-8-羧酸，3-羟基-1-(苯甲基)-,叔丁酯