InChI=1S/C11H16N2O5/c12-10(17)6-2-1-3-13(4-6)11-9(16)8(15)7(5-14)18-11/h1,3-4,7-9,11,14-16H,2,5H2,(H2,12,17)/t7-,8-,9-,11-/m1/s1