(1R,4aR,5R,8aR)-methyl-6-formyl-1,4a-dimethyl-5-(4-methyl-3-oxopentyl)-1,2,3,4,4a,5,8,8a-octahydronaphthalene-1-carboxylate

abieta-7,13(14)-diene-18-oic acid

(1R,4aR,8aR)-6-[1,3]Dioxan-2-yl-1,4a-dimethyl-5-(2-oxo-ethyl)-1,2,3,4,4a,5,8,8a-octahydro-naphthalene-1-carboxylic acid methyl ester