InChI=1S/C31H37N5O4/c1-18(2)26(32-5)30(38)36-27-28(19(3)4)40-22-12-10-20(11-13-22)14-15-33-29(37)25(35-31(27)39)16-21-17-34-24-9-7-6-8-23(21)24/h6-15,17-18,25-28,32,34H,3,16H2,1-2,4-5H3,(H,33,37)(H,35,39)(H,36,38)/b15-14-