ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%26%2361%3BC%28OC2C1CCN%28CC1%29C2%29C%28O%29%28c3ccccc3%29c4ccccc4/file?format=sdf&get3d=True  -- O%26%2361%3BC%28OC2C1CCN%28CC1%29C2%29C%28O%29%28c3ccccc3%29c4ccccc4 could not be loaded.