InChI=1S/C22H26N2O7/c25-16-7-3-14(13-18(16)27)4-9-19(28)23-11-1-2-12-24-20(29)10-6-15-5-8-17(26)22(31)21(15)30/h3,5-8,10,13,25-27,30-31H,1-2,4,9,11-12H2,(H,23,28)(H,24,29)