InChI=1S/C28H38O6/c1-15(8-9-22(33)34-7)16-12-21(32)28(6)24-17(29)13-19-25(2,3)20(31)10-11-26(19,4)23(24)18(30)14-27(16,28)5/h15-16,19H,8-14H2,1-7H3/t15-,16-,19?,26+,27-,28+/m1/s1