InChI=1S/C30H32O7/c1-20(5-3-7-21(2)19-36-29(34)16-11-22-9-12-24(31)13-10-22)6-4-8-23-17-28(37-30(23)35)26-18-25(32)14-15-27(26)33/h6-7,9-18,28,31-33H,3-5,8,19H2,1-2H3/b16-11+,20-6+,21-7+/t28-/m0/s1