ERROR opening https://cactus.nci.nih.gov/chemical/structure/COC%28%26%2361%3BO%29C1%26%2361%3BCOC%28C2C1CC%26%2361%3BC2CO%29O/file?format=sdf&get3d=True  -- COC%28%26%2361%3BO%29C1%26%2361%3BCOC%28C2C1CC%26%2361%3BC2CO%29O could not be loaded.