ERROR opening https://cactus.nci.nih.gov/chemical/structure/OC%28%3DO%29Cc1ccccc1Oc2ccc%28Cl%29cc2Cl/file?format=sdf&get3d=True  -- OC%28%3DO%29Cc1ccccc1Oc2ccc%28Cl%29cc2Cl could not be loaded.