InChI=1/C28H29NO4/c1-18(2)28-24(14-13-23-15-21(30)16-27(31)33-23)25(19-9-11-22(32-3)12-10-19)17-26(29-28)20-7-5-4-6-8-20/h4-14,17-18,21,23,30H,15-16H2,1-3H3/b14-13+/t21-,23-/m1/s1 03AF377B93F7129C