ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/2C8H12.Ni/c2*1-2-4-6-8-7-5-3-1;/h2*1-2,7-8H,3-6H2/file?format=sdf&get3d=True  -- InChI=1S/2C8H12.Ni/c2*1-2-4-6-8-7-5-3-1;/h2*1-2,7-8H,3-6H2 could not be loaded.