InChI=1/C25H38N4O4/c26-24(27)19-9-11-21(12-10-19)33-15-13-20-8-4-5-14-29(20)25(32)22(28-17-23(30)31)16-18-6-2-1-3-7-18/h9-12,18,20,22,28H,1-8,13-17H2,(H3,26,27)(H,30,31)/t20-,22+/m0/s1/f/h26-27H2 B12520229F7116B7