InChI=1/C15H18N4O/c1-2-19(10-11-3-5-13(16)6-4-11)14-9-12(15(17)20)7-8-18-14/h3-9H,2,10,16H2,1H3,(H2,17,20)/f/h17H2 217B01DCB6E6FC52