InChI=1S/C33H52NO7/c1-17-7-12-33(34-15-17)18(2)26-24(41-33)14-23-21-6-5-19-13-20(8-10-31(19,3)22(21)9-11-32(23,26)4)39-30-29(38)28(37)27(36)25(16-35)40-30/h5,17-18,20-30,35-38H,6-16H2,1-4H3/q+1