ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C19H22N4/c1-3-14-10-16-5-7-18(22-16)19-8-6-17(23-19)11-15-4-2-13(21-15)9-12(1)20-14/h9-11,18-20H,1-8H2/b12-9-,14-10-,15-11-/file?format=sdf&get3d=True -- InChI=1S/C19H22N4/c1-3-14-10-16-5-7-18(22-16)19-8-6-17(23-19)11-15-4-2-13(21-15)9-12(1)20-14/h9-11,18-20H,1-8H2/b12-9-,14-10-,15-11- could not be loaded.