ERROR opening https://cactus.nci.nih.gov/chemical/structure/Cc1c%28c2ccccc2%5BnH%5D1%29CC%28C%29N/file?format=sdf&get3d=True  -- Cc1c%28c2ccccc2%5BnH%5D1%29CC%28C%29N could not be loaded.