4H-1-benzopyran-4-one, 7-bromo-2,3-dihydro-6-hydroxy-2-(4-hydroxy-4-methylpentyl)-2-methyl- 7-bromo-6-hydroxy-2-(4-hydroxy-4-methylpentyl)-2-methyl-2,3-dihydro-4H-chromen-4-one InChI=1/C16H21BrO4/c1-15(2,20)5-4-6-16(3)9-13(19)10-7-12(18)11(17)8-14(10)21-16/h7-8,18,20H,4-6,9H2,1-3H