InChI=1S/C20H22O11/c21-13(22)10-9-12-11(29-12)7-5-3-1-2-4-6-8-14(23)30-20-17(26)15(24)16(25)18(31-20)19(27)28/h1-12,15-18,20,24-26H,(H,21,22)(H,27,28)/b3-1+,4-2+,7-5-,8-6-,10-9-