InChI=1S/C20H22O10/c21-13(22)11-9-7-5-3-1-2-4-6-8-10-12-14(23)29-20-17(26)15(24)16(25)18(30-20)19(27)28/h1-12,15-18,20,24-26H,(H,21,22)(H,27,28)/b3-1+,4-2-,7-5+,8-6+,11-9-,12-10-