InChI=1S/C29H34O5/c30-25(13-9-5-1-3-7-11-23-15-17-26-28(19-23)33-21-31-26)14-10-6-2-4-8-12-24-16-18-27-29(20-24)34-22-32-27/h7-8,11-12,15-20H,1-6,9-10,13-14,21-22H2/b11-7+,12-8+