6,6,9a-trimethyl-4,5,5a,6,7,8,9,9a-octahydronaphtho[1,2-c]furan InChI=1/C15H22O/c1-14(2)7-4-8-15(3)12-10-16-9-11(12)5-6-13(14)15/h9-10,13H,4-8H2,1-3H naphtho[1,2-c]furan, 4,5,5a,6,7,8,9,9a-octahydro-6,6,9a-trimethyl-