2H-1-benzopyran-2-one, 7-hydroxy-6-(3-hydroxy-3-methyl-2-oxobutyl)- 7-hydroxy-6-(3-hydroxy-3-methyl-2-oxobutyl)-2H-chromen-2-one InChI=1/C14H14O5/c1-14(2,18)12(16)6-9-5-8-3-4-13(17)19-11(8)7-10(9)15/h3-5,7,15,18H,6H2,1-2H