ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C12H6Cl4O2S/c13-7-1-3-8%284-2-7%2919%2817%2C18%2912-6-10%2815%299%2814%295-11%2812%2916/h1-6H/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C12H6Cl4O2S/c13-7-1-3-8%284-2-7%2919%2817%2C18%2912-6-10%2815%299%2814%295-11%2812%2916/h1-6H could not be loaded.