InChI=1S/C32H32O12/c1-18(33)7-8-20-9-12-22(13-10-20)42-32-30(44-31(40)21-15-23(34)27(37)24(35)16-21)29(39)28(38)25(43-32)17-41-26(36)14-11-19-5-3-2-4-6-19/h2-6,9-16,25,28-30,32,34-35,37-39H,7-8,17H2,1H3/b14-11+