2-[3,4-Dihydroxy-5-(6-hydroxy-3,6-dimethyl-hept-2-enyl)-phenyl]-5,7-dihydroxy-chroman-4-one 2-{3,4-dihydroxy-5-[(2E)-7-hydroxy-3,7-dimethyloct-2-en-1-yl]phenyl}-5,7-dihydroxy-2,3-dihydro-4H-chromen-4-one 4H-1-benzopyran-4-one, 2-[3,4-dihydroxy-5-[(2E)-7-hydroxy-3,7-dimethyl-2-octenyl]phenyl]-2,3-dihydro-5,7-dihydroxy-, (2S)- InChI=1/C25H30O7/c1-14(5-4-8-25(2,3)31)6-7-15-9-16(10-20(29)24(15)30)21-13-19(28)23-18(27)11-17(26)12-22(23)32-21/h6,9-12,21,26-27,29-31H,4-5,7-8,13H2,1-3H3/b14-6+/t21-/m0/s Propolin B