(3R,4R)-3,4-bis[(4-hydroxy-3-methoxyphenyl)methyl]oxolan-2-ol (3R,4R)-3,4-bis[(4-hydroxy-3-methoxy-phenyl)methyl]tetrahydrofuran-2-ol (3R,4R)-3,4-bis[(4-hydroxy-3-methoxyphenyl)methyl]-2-tetrahydrofuranol (3R,4R)-3,4-bis(4-hydroxy-3-methoxy-benzyl)tetrahydrofuran-2-ol (3R,4R)-3,4-bis[(4-hydroxy-3-methoxy-phenyl)methyl]oxolan-2-ol