ERROR opening https://cactus.nci.nih.gov/chemical/structure/N%23Cc2ccc%28Sc1c%28cccc1%29CN%28C%29C%29c%28c2%29N/file?format=sdf&get3d=True  -- N%23Cc2ccc%28Sc1c%28cccc1%29CN%28C%29C%29c%28c2%29N could not be loaded.