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4'-demethyldehydropodophyllotoxin | 5-hydroxy-9-(4-hydroxy-3,5-dimethoxyphenyl)-6H-[2]benzofuro[5,6-f][1,3]benzodioxol-8-one | 5-hydroxy-9-(4-hydroxy-3,5-dimethoxyphenyl)-6H-(2)benzofuro(5,6-f)(1,3)benzodioxol-8-one