InChI=1S/C20H22O5/c1-25-20-12-15(6-11-19(20)24)5-10-18(23)13-17(22)9-4-14-2-7-16(21)8-3-14/h2-3,6-8,11-12,21,24H,4-5,9-10,13H2,1H3