InChI=1S/C22H22O8/c1-3-11(23)9-15(25)17-10(8-16(26)30-2)7-13-19(21(17)28)22(29)18-12(20(13)27)5-4-6-14(18)24/h4-7,11,15,23-25,28H,3,8-9H2,1-2H3/t11-,15+/m0/s1