InChI=1/C16H18N4O3/c17-15(21)10-11-5-8-19(9-6-11)14-4-3-13(20(22)23)12-2-1-7-18-16(12)14/h1-4,7,11H,5-6,8-10H2,(H2,17,21)/f/h17H2 DA87104E5309A28D