ERROR opening https://cactus.nci.nih.gov/chemical/structure/O1C%5BC%40%40H%5D%28OC1%28c2ccccc2%29c3ccccc3%29%5BC%40H%5D4NCCCC4/file?format=sdf&get3d=True  -- O1C%5BC%40%40H%5D%28OC1%28c2ccccc2%29c3ccccc3%29%5BC%40H%5D4NCCCC4 could not be loaded.