4H-1-benzopyran-4-one, 2,3-dihydro-6-hydroxy-2,2,7,8-tetramethyl- 6-hydroxy-2,2,7,8-tetramethyl-2,3-dihydro-4H-chromen-4-one InChI=1/C13H16O3/c1-7-8(2)12-9(5-10(7)14)11(15)6-13(3,4)16-12/h5,14H,6H2,1-4H