InChI=1S/C35H54O7/c1-9-20(2)29(41)42-28-27(40)30(3,4)16-22-21-10-11-24-31(5)14-13-25(38)32(6,18-36)23(31)12-15-33(24,7)34(21,8)17-26(39)35(22,28)19-37/h9-10,18,22-28,37-40H,11-17,19H2,1-8H3/b20-9+