4-[3-(5,5-Dimethyl-4-oxo-4,5-dihydro-furan-2-yl)-3-hydroxy-butoxy]-furo[3,2-g]chromen-7-one InChI=1/C21H20O7/c1-20(2)16(22)11-17(28-20)21(3,24)7-9-26-19-12-4-5-18(23)27-15(12)10-14-13(19)6-8-25-14/h4-6,8,10-11,24H,7,9H2,1-3H O-[3-(2,2-dimethyl-3-oxo-2H-furan-5-yl)-3-hydroxybutyl]bergaptol