InChI=1/C19H26N4O5/c1-4-27-16(24)6-5-7-28-15-10-12(9-14(25-2)17(15)26-3)8-13-11-22-19(21)23-18(13)20/h9-11H,4-8H2,1-3H3,(H4,20,21,22,23)/f/h20-21H2 8994CBEF04248E67