ERROR opening https://cactus.nci.nih.gov/chemical/structure/N%23Cc2c%28Cl%29cccc2OCC%28O%29CNC%28C%29%28C%29Cc3ccc1ccccc1c3/file?format=sdf&get3d=True -- N%23Cc2c%28Cl%29cccc2OCC%28O%29CNC%28C%29%28C%29Cc3ccc1ccccc1c3 could not be loaded.