InChI=1S/C21H22N2O6/c24-9-10-28-14-23-20(26)18(19(25)22-21(23)27)12-16-7-4-8-17(11-16)29-13-15-5-2-1-3-6-15/h1-8,11,24,26H,9-10,12-14H2,(H,22,25,27)