7,9-ditert-butyl-1-oxaspiro[4.5]deca-6,9-diene-2,8-dione;7,9-ditert-butyl-1-oxaspiro[4.5]deca-6,9-diene-2,8-quinone;1-Oxa-spiro[4.5]deca-6,9-diene-2,8-dione, 7,9-di-tert-butyl-;7,9-Di-tert-butyl-1-oxaspiro(4,5)deca-6,9-diene-2,8-dione
7,9-ditert-butyl-1-oxaspiro[4.5]deca-6,9-diene-2,8-dione