InChI=1/C21H23N5O/c1-21(2,12-22)20-24-18(13-7-9-23-10-8-13)19(25-20)15-3-5-16-14(11-15)4-6-17(16)26-27/h3,5,7-11,27H,4,6,12,22H2,1-2H3,(H,24,25)/p+1/b26-17+/fC21H24N5O/h22,24H/q+1 F681BB1D206DD4B4