InChI=1/C13H20N2O4/c1-8-5-3-4-6-9(8)14-12(16)11-7-10(15-19-11)13(17)18-2/h8-9,11H,3-7H2,1-2H3,(H,14,16)/t8-,9-,11+/m1/s1/f/h14H 87BB2D28847016CB