InChI=1/C21H21N5O/c1-3-27-15-6-4-14(5-7-15)19-18-11-26(2)9-8-16(18)17(10-22)20(25)21(19,12-23)13-24/h4-8,18-19H,3,9,11,25H2,1-2H3/t18-,19-/m0/s1 044AC64534FC603F