InChI=1S/C17H22N2O7/c1-8(6-7-11-18-9-4-2-3-5-10(9)19-11)25-17-14(22)12(20)13(21)15(26-17)16(23)24/h2-5,8,12-15,17,20-22H,6-7H2,1H3,(H,18,19)(H,23,24)