InChI=1S/C31H32O18/c32-15-5-1-13(9-16(15)33)3-7-21(37)47-26-18(35)11-31(30(44)45,12-19(26)36)49-22(38)8-4-14-2-6-20(17(34)10-14)46-29-25(41)23(39)24(40)27(48-29)28(42)43/h1-10,18-19,23-27,29,32-36,39-41H,11-12H2,(H,42,43)(H,44,45)/b7-3+,8-4+/t18?,19?,23?,24?,25?,26?,27?,29?,31-