ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/2Fe.3H2O4S.H2O/c;;3*1-5(2,3)4;/h;;3*(H2,1,2,3,4);1H2/q2* 3;;;;/p-6/file?format=sdf&get3d=True  -- InChI=1S/2Fe.3H2O4S.H2O/c;;3*1-5(2,3)4;/h;;3*(H2,1,2,3,4);1H2/q2* 3;;;;/p-6 could not be loaded.