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Structures of 3β-hydroxy-5β-bufa-14,20,22-trienolide,C24H32O3, and 3β-acetoxy-15α-(o-nitrobenzoyloxy)-7-oxo-5β,14β-bufa-8,20,22-trienolide,C33H35NO9 |
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| Authors: | L R Nassimbeni M L Niven G M Sheldrick G R Pettit M Inoue Y Kamano |
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