InChI=1/C20H20N2O3/c23-17-9-6-14(15-7-10-19(25)22-20(15)17)18(24)11-21-16-8-5-12-3-1-2-4-13(12)16/h1-4,6-7,9-10,16,18,21,23-24H,5,8,11H2,(H,22,25)/t16-,18-/m0/s1/f/h23h,21-22H 8133D188A111C964