InChI=1S/C23H26O7/c1-25-17-7-5-13(9-19(17)27-3)22-15-11-21(24)30-23(16(15)12-29-22)14-6-8-18(26-2)20(10-14)28-4/h5-10,15-16,22-23H,11-12H2,1-4H3/t15-,16+,22+,23-/m1/s1