InChI=1/C20H26N4O4/c1-14(23-8-10-28-11-9-23)12-21-17(25)13-24-18(26)20(22-19(24)27)7-6-15-4-2-3-5-16(15)20/h2-5,14H,6-13H2,1H3,(H,21,25)(H,22,27)/t14-,20-/m0/s1/f/h21-22H C32AE1081F1BBDED