InChI=1S/C26H34O3/c1-18-20(16-22(27)17-24(18)28)11-10-19-8-7-15-26(4)21(12-13-23(19)26)9-5-6-14-25(2,3)29/h10-11,21-24,27-29H,1,7-8,12-13,15-17H2,2-4H3/b19-10+,20-11-/t21-,22+,23-,24-,26+/m0/s1