ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/Fe.H3N.2H2O4S/c;;2*1-5(2,3)4/h;1H3;2*(H2,1,2,3,4)/q 3;;;/p-3/file?format=sdf&get3d=True  -- InChI=1S/Fe.H3N.2H2O4S/c;;2*1-5(2,3)4/h;1H3;2*(H2,1,2,3,4)/q 3;;;/p-3 could not be loaded.