InChI=1S/C17H22N2O7/c1-2-3-4-11-18-9-6-5-8(7-10(9)19-11)25-17-14(22)12(20)13(21)15(26-17)16(23)24/h5-7,12-15,17,20-22H,2-4H2,1H3,(H,18,19)(H,23,24)