InChI=1/C21H21N3O4/c1-25-17-6-3-13-2-5-16(8-15(13)9-17)22-11-20-23-21(28-24-20)14-4-7-18-19(10-14)27-12-26-18/h3-4,6-7,9-10,16,22H,2,5,8,11-12H2,1H3/t16-/m1/s1 54AE58ABCA20E0DD