InChI=1/C18H18N2O4/c1-10-8-13(10)15-6-3-12(23-15)4-7-17(21)19-11-2-5-16-14(9-11)20-18(22)24-16/h2-3,5-6,9-10,13H,4,7-8H2,1H3,(H,19,21)(H,20,22)/t10-,13+/m1/s1/f/h19-20H 98D185CA77312FF3