5H-inden-5-one, 1,2,3,6,7,7a-hexahydro-7a-methyl- 7a-methyl-1,2,3,6,7,7a-hexahydro-5H-inden-5-one InChI=1/C10H14O/c1-10-5-2-3-8(10)7-9(11)4-6-10/h7H,2-6H2,1H