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3-Oxoolean-1-en-28-oic acid, isolated from the bark of Walsura pinnata Hassk, crystallized from n-hexane as an n-hexane 0.25-solvent 0.25-hydrate, C30H46O3.0.25C6H14.0.25H2O. There are two independent molecules in the asymmetric unit of the title compound. The three six-membered cyclohexane rings...
Molecules of the title compound systematic name: (2R,5S,7S)-2-phenyl-7-phenylsulfanyl-1-aza-3-oxabicyclo3.3.0octan-8-one, C18H17NO2S, form high quality crystals even though they are only packed using C-HO(carbonyl) and weak C-HS interactions. The dihedral angle between the aromatic rings is 85.53...