ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1CN%28C%28%3DO%29NC1%3DO%29%5BC%40H%5D2C%5BC%40%40H%5D%28%5BC%40H%5D%28O2%29CO%29O/file?format=sdf&get3d=True -- CC1CN%28C%28%3DO%29NC1%3DO%29%5BC%40H%5D2C%5BC%40%40H%5D%28%5BC%40H%5D%28O2%29CO%29O could not be loaded.