7-(tert-Butoxycarbonyl)-1-oxa-2,7-diazaspiro[4.5]dec-2-ene-3-carboxylic acid

7-(tert-Butoxycarbonyl)-1-oxa-2,7-diazaspiro[4.5]dec-2-ene-3-carboxylic acid · CAS 1160247-01-7