1H-benz[e]inden-1-one, 2,3-dihydro-2,8-dihydroxy-5-methoxy-3,3,7-trimethyl- 2,8-Dihydroxy-5-methoxy-3,3,7-trimethyl-2,3-dihydro-cyclopenta[a]naphthalen-1-one 2,8-dihydroxy-5-methoxy-3,3,7-trimethyl-2,3-dihydro-1H-cyclopenta[a]naphthalen-1-one InChI=1/C17H18O4/c1-8-5-9-10(6-12(8)18)14-11(7-13(9)21-4)17(2,3)16(20)15(14)19/h5-7,16,18,20H,1-4H Neoboutonin