InChI=1S/C21H22O5/c1-13(11-16(25-2)7-9-20(23)24)10-14-4-3-5-17-18-12-15(22)6-8-19(18)26-21(14)17/h6-12,14,22H,3-5H2,1-2H3,(H,23,24)