ERROR opening https://cactus.nci.nih.gov/chemical/structure/Clc1ccc%28cc1%29C%28O%29%28c2ccccc2Cl%29c3cncnc3/file?format=sdf&get3d=True  -- Clc1ccc%28cc1%29C%28O%29%28c2ccccc2Cl%29c3cncnc3 could not be loaded.