InChI=1S/C28H46O3/c1-17(2)18(3)7-8-19(4)21-11-12-22-23-10-9-20-15-24(29)25(30)16-27(20,6)28(23,31)14-13-26(21,22)5/h7-8,10,17-22,24-25,29-31H,9,11-16H2,1-6H3/b8-7+/t18-,19+,20?,21+,22?,24-,25-,26+,27-,28+/m0/s1