"3-benzyl 7-tert-butyl 9-oxo-3,7-diaza-bicyclo[3.3.1]nonane-3,7-dicarboxylate"
"3-benzyl 7-tert-butyl 9-oxo-3,7-diaza-bicyclo[3.3.1]nonane-3,7-dicarboxylate"
"3-benzyl 7-tert-butyl 9-oxo-3,7-diaza-bicyclo[3.3.1]nonane-3,7-dicarboxylate"
"3-benzyl 7-tert-butyl 9-oxo-3,7-diaza-bicyclo[3.3.1]nonane-3,7-dicarboxylate"