(meso)-4-Benzoyl-3,5-dimethoxy-2-(3-methylbut-2-enyl)-6,6-bis[5-methyl-2-(1-methylvinyl)hexa-4-enyl]cyclohexa-2,4-dien-1-one 2,4-cyclohexadien-1-one, 4-benzoyl-3,5-dimethoxy-2-(3-methyl-2-butenyl)-6,6-bis[5-methyl-2-(1-methylethenyl)-4-hexenyl]- 4-Benzoyl-6,6-bis-(2-isopropenyl-5-methyl-hex-4-enyl)-3,5-dimethoxy-2-(3-methyl-but-2-enyl)-cyclohexa-2,4-dienone 4-benzoyl-6,6-bis(2-isopropenyl-5-methylhex-4-en-1-yl)-3,5-dimethoxy-2-(3-methylbut-2-en-1-yl)cyclohexa-2,4-dien-1-one Dimethyl weddellianone B InChI=1/C40H54O4/c1-26(2)18-21-32(29(7)8)24-40(25-33(30(9)10)22-19-27(3)4)38(42)34(23-20-28(5)6)37(43-11)35(39(40)44-12)36(41)31-16-14-13-15-17-31/h13-20,32-33H,7,9,21-25H2,1-6,8,10-12H