InChI=1S/C33H35N3O7/c1-21(37)34-29(18-23-12-15-26(19-30(38)39)27(17-23)33(42)43)31(40)35-28-9-5-6-16-36(32(28)41)20-22-10-13-25(14-11-22)24-7-3-2-4-8-24/h2-4,7-8,10-15,17,28-29H,5-6,9,16,18-20H2,1H3,(H,34,37)(H,35,40)(H,38,39)(H,42,43)/t28-,29-/m0/s1