ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C6Cl6/c7-1-2%288%294%2810%296%2812%295%2811%293%281%299/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C6Cl6/c7-1-2%288%294%2810%296%2812%295%2811%293%281%299 could not be loaded.