InChI=1S/C21H24O5/c1-25-19-11-14-6-10-18(24)21(16(14)12-20(19)26-2)17(23)9-5-13-3-7-15(22)8-4-13/h3-5,7-9,11-12,17-18,21-24H,6,10H2,1-2H3/b9-5-