InChI=1/C14H18N2O4/c1-9-10(5-4-7-12(9)16(19)20)14(18)15-11-6-2-3-8-13(11)17/h4-5,7,11,13,17H,2-3,6,8H2,1H3,(H,15,18)/t11-,13+/m0/s1/f/h15H 59BA0DA5C67DA560