ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C20H22N2O4/c1-22-18(24)19(25,13-15-9-5-3-6-10-15)21-17(23)20(22,26-2)14-16-11-7-4-8-12-16/h3-12,25H,13-14H2,1-2H3,(H,21,23)/t19-,20 /m1/s1/file?format=sdf&get3d=True  -- InChI=1S/C20H22N2O4/c1-22-18(24)19(25,13-15-9-5-3-6-10-15)21-17(23)20(22,26-2)14-16-11-7-4-8-12-16/h3-12,25H,13-14H2,1-2H3,(H,21,23)/t19-,20 /m1/s1 could not be loaded.