2,3,6,7-tetramethyl-1,4a,5,8,8a,9a,10,10a-octahydroanthracen-9(4H)-one 9(4H)-anthracenone, 1,4a,5,8,8a,9a,10,10a-octahydro-2,3,6,7-tetramethyl- InChI=1/C18H26O/c1-10-5-14-9-15-6-11(2)13(4)8-17(15)18(19)16(14)7-12(10)3/h14-17H,5-9H2,1-4H