ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C19H14N6O4/c26-24(27)16-11-12-17(18(13-16)25(28)29)21-23-19(14-7-3-1-4-8-14)22-20-15-9-5-2-6-10-15/h1-13,20H/b22-19?,23-21+/file?format=sdf&get3d=True  -- InChI=1S/C19H14N6O4/c26-24(27)16-11-12-17(18(13-16)25(28)29)21-23-19(14-7-3-1-4-8-14)22-20-15-9-5-2-6-10-15/h1-13,20H/b22-19?,23-21+ could not be loaded.