ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1%26%2361%3BC%28C2%26%2361%3BC%28C%28%26%2361%3BO%29C%28%26%2361%3BO%29C3%26%2361%3BC2NC%28%26%2361%3BC3%29C%28%26%2361%3BO%29O%29N%26%2361%3BC1C%28%26%2361%3BO%29O%29C%28%26%2361%3BO%29O/file?format=sdf&get3d=True -- C1%26%2361%3BC%28C2%26%2361%3BC%28C%28%26%2361%3BO%29C%28%26%2361%3BO%29C3%26%2361%3BC2NC%28%26%2361%3BC3%29C%28%26%2361%3BO%29O%29N%26%2361%3BC1C%28%26%2361%3BO%29O%29C%28%26%2361%3BO%29O could not be loaded.