ERROR opening https://cactus.nci.nih.gov/chemical/structure/COC%28%3DO%29%5BC%40H%5D1CN%28C%29%5BC%40%40H%5D2Cc3c%5BnH%5Dc4cccc%28C2%3DC1%29c34/file?format=sdf&get3d=True -- COC%28%3DO%29%5BC%40H%5D1CN%28C%29%5BC%40%40H%5D2Cc3c%5BnH%5Dc4cccc%28C2%3DC1%29c34 could not be loaded.