InChI=1/C20H19N5O3/c1-2-20(15-6-4-3-5-7-15)18(27)25(19(28)23-20)24-17(26)13-22-16-10-8-14(12-21)9-11-16/h3-11,22H,2,13H2,1H3,(H,23,28)(H,24,26)/t20-/m0/s1/f/h23-24H 91DCA9EFF08B8EF1