ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C10H12N2/c11-7-5-9-3-1-2-4-10(9)6-8-12/h1-2,9-10H,3-6H2/file?format=sdf&get3d=True -- InChI=1S/C10H12N2/c11-7-5-9-3-1-2-4-10(9)6-8-12/h1-2,9-10H,3-6H2 could not be loaded.