16499-05-1 8,8-Dimethyl-7,8-dihydro-pyrano[3,2-g]chromene-2,6-dione 8,8-dimethyl-7,8-dihydro-2H,6H-pyrano[3,2-g]chromene-2,6-dione Graveolone InChI=1/C14H12O4/c1-14(2)7-10(15)9-5-8-3-4-13(16)17-11(8)6-12(9)18-14/h3-6H,7H2,1-2H naphthalene