InChI=1S/C23H28N4O4/c28-21(24-11-4-12-26-13-15-30-16-14-26)8-9-22(29)27-17-18-5-1-2-7-20(18)31-23-19(27)6-3-10-25-23/h1-3,5-7,10H,4,8-9,11-17H2,(H,24,28)