InChI=1/C19H20N4O2/c1-4-23-15(13-9-8-12-14-10-6-5-7-11-14)20-17-16(23)18(24)22(3)19(25)21(17)2/h5-13H,4H2,1-3H3/b12-8+,13-9+ 77D1AED8B8D7C8CD