InChI=1/C17H20N4O4/c22-15-17(8-4-2-1-3-5-9-17)19-16(23)21(15)11-13-18-14(25-20-13)12-7-6-10-24-12/h6-7,10H,1-5,8-9,11H2,(H,19,23)/f/h19H 5B92F64BB8DDCD3E