ERROR opening https://cactus.nci.nih.gov/chemical/structure/C%5BC%40H%5D1C%5BC%40H%5D%28N%29CN%28C1%29c2ccc3c%28c2OC%29n%28C4CC4%29cc%28c3%3DO%29C%28%3DO%29O/file?format=sdf&get3d=True -- C%5BC%40H%5D1C%5BC%40H%5D%28N%29CN%28C1%29c2ccc3c%28c2OC%29n%28C4CC4%29cc%28c3%3DO%29C%28%3DO%29O could not be loaded.