InChI=1/C18H22N4O4/c1-10(2)15(17-21-16(22-26-17)11-3-4-11)20-18(23)19-12-5-6-13-14(9-12)25-8-7-24-13/h5-6,9-11,15H,3-4,7-8H2,1-2H3,(H2,19,20,23)/t15-/m1/s1/f/h19-20H 1FA25CC4F664A7BF