InChI=1/C28H25NO4/c1-3-16-29(17-4-2)18-24-25(30)15-14-23-27(31)26(19-32-28(23)24)33-22-12-10-21(11-13-22)20-8-6-5-7-9-20/h3-15,19,30H,1-2,16-18H2/p+1/fC28H26NO4/h29H/q+1 231877DCBA4979B8