InChI=1S/C33H32O7/c1-17-26(35)23-20(34)16-21(18-12-8-6-9-13-18)39-28(23)24-22(19-14-10-7-11-15-19)25-29(36)31(2,3)30(37)32(4,5)33(25,38)40-27(17)24/h6-15,21-22,25,35,38H,16H2,1-5H3/t21-,22+,25+,33-/m0/s1