(2R,3R)-3,4'-Dihydroxy-7-methoxy-8-methylflavan 2-(4-Hydroxy-phenyl)-7-methoxy-8-methyl-chroman-3-ol 2H-1-benzopyran-3-ol, 3,4-dihydro-2-(4-hydroxyphenyl)-7-methoxy-8-methyl-, (2R,3R)- InChI=1/C17H18O4/c1-10-15(20-2)8-5-12-9-14(19)17(21-16(10)12)11-3-6-13(18)7-4-11/h3-8,14,17-19H,9H2,1-2H3/t14-,17-/m1/s Tupichinol A rel-(2R,3R)-2-(4-hydroxyphenyl)-7-methoxy-8-methylchroman-3-ol