1-(1,5-Dimethyl-hexa-1,4-dienyl)-8-methyl-6-oxo-1,4,5,6,7,7a-hexahydro-4,7-methano-indene-3a-carbaldehyde 4,7-methano-3aH-indene-3a-carboxaldehyde, 1-[(1Z)-1,5-dimethyl-1,4-hexadienyl]-1,4,5,6,7,7a-hexahydro-8-methyl-6-oxo-, (1R,3aS,4S,7R,7aS,8R)- Dictyterpenoid A InChI=1/C20H26O2/c1-12(2)6-5-7-13(3)15-8-9-20(11-21)16-10-17(22)18(14(16)4)19(15)20/h6-9,11,14-16,18-19H,5,10H2,1-4H3/b13-7-/t14-,15+,16+,18+,19+,20+/m1/s rel-(1R,3aS,4S,7R,7aS,8R)-1-[(1Z)-1,5-dimethylhexa-1,4-dien-1-yl]-8-methyl-6-oxo-1,4,5,6,7,7a-hexahydro-3aH-4,7-methanoindene-3a-carbaldehyde