InChI=1/C20H23N3O3/c1-19(2,3)21-16(24)12-23-17(25)20(4,22-18(23)26)15-11-7-9-13-8-5-6-10-14(13)15/h5-11H,12H2,1-4H3,(H,21,24)(H,22,26)/t20-/m1/s1/f/h21-22H 167DEC2701CD93ED