ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%28c1cc2c%28cc1%29%5BnH%5Dcc2CCN%29C/file?format=sdf&get3d=True -- O%28c1cc2c%28cc1%29%5BnH%5Dcc2CCN%29C could not be loaded.