InChI=1S/C22H22O8/c1-12-8-16(14-6-7-27-10-14)30-21(26)19(12)17(29-13(2)23)9-22-11-28-20(25)15(22)4-3-5-18(22)24/h3,5-7,10,15-17H,4,8-9,11H2,1-2H3/t15-,16+,17+,22+/m0/s1