ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C12H12N4.ClH/c13-9-6-7-12%2811%2814%298-9%2916-15-10-4-2-1-3-5-10%3B/h1-8H%2C13-14H2%3B1H/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C12H12N4.ClH/c13-9-6-7-12%2811%2814%298-9%2916-15-10-4-2-1-3-5-10%3B/h1-8H%2C13-14H2%3B1H could not be loaded.