InChI=1S/C26H39N3O4/c27-25(32)20-8-4-7-19(13-20)21-14-22-9-10-23(15-21)29(22)12-11-28(26(33)24(31)17-30)16-18-5-2-1-3-6-18/h4,7-8,13,18,21-24,30-31H,1-3,5-6,9-12,14-17H2,(H2,27,32)/t21-,22+,23-,24-/m0/s1