InChI=1/C16H18N4O2/c1-3-20-14-12(9-11(6-8-21)10-18-14)16(22)19(2)13-5-4-7-17-15(13)20/h4-5,7,9-10,21H,3,6,8H2,1-2H3 929F725864E51A04