ERROR opening https://cactus.nci.nih.gov/chemical/structure/N%23Cc1ccc%28cc1%29N/C%28NCC%28O%29%3DO%29%3DN%5CCc2cccc3OCOc23/file?format=sdf&get3d=True  -- N%23Cc1ccc%28cc1%29N/C%28NCC%28O%29%3DO%29%3DN%5CCc2cccc3OCOc23 could not be loaded.