InChI=1S/C21H22O9/c22-13-4-1-10(2-5-13)12-7-11-3-6-14(8-15(11)28-9-12)29-21-18(25)16(23)17(24)19(30-21)20(26)27/h1-6,8,12,16-19,21-25H,7,9H2,(H,26,27)/t12-,16+,17+,18-,19+,21-/m1/s1