2-(8-(tert-Butoxycarbonyl)-4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)acetic acid 1g

2-(8-(tert-Butoxycarbonyl)-4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)acetic acid 1g