methyl 12-(p–methoxyphenyl)amino-13-nitro-7-oxodehydrodeisopropylabietate

methyl 7-keto-6-d2-abieta-8,11,13-trien-18-oate

(4R,5R,10S)-18-hydroxy-<18,18-2H2>dehydroabietan

(1R,4aS,10aS)-1-Ethyl-7-isopropyl-1,4a-dimethyl-1,2,3,4,4a,9,10,10a-octahydro-phenanthrene

methyl (1R,4aR,10aR)-1,4a-dimethyl-6-formamido-7-nitro-1,2,3,4,4a,9,10,10a-octahydrophenanthrene-1-carboxylate