InChI=1S/C31H34O19/c1-44-17-4-11(2-3-14(17)34)29-18(48-31-28(43)26(41)24(39)20(50-31)10-45-22(37)8-21(35)36)7-13-15(46-29)5-12(33)6-16(13)47-30-27(42)25(40)23(38)19(9-32)49-30/h2-7,19-20,23-28,30-32,38-43H,8-10H2,1H3,(H2-,33,34,35,36)/p+1/t19-,20-,23-,24-,25+,26+,27-,28-,30-,31-/m1/s1