InChI=1S/C21H22N2O5/c24-9-10-27-15-23-13-18(20(25)22-21(23)26)11-17-7-4-8-19(12-17)28-14-16-5-2-1-3-6-16/h1-8,12-13,24H,9-11,14-15H2,(H,22,25,26)