ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/Co.3K.6HNO2.H2O/c;;;;6*2-1-3;/h;;;;6*(H,2,3);1H2/q 3;3* 1;;;;;;;/p-6/file?format=sdf&get3d=True  -- InChI=1S/Co.3K.6HNO2.H2O/c;;;;6*2-1-3;/h;;;;6*(H,2,3);1H2/q 3;3* 1;;;;;;;/p-6 could not be loaded.