ERROR opening https://cactus.nci.nih.gov/chemical/structure/NC%28Cc1ccc%28Oc2ccc%28O%29c%28I%29c2%29c%28I%29c1%29C%28%3DO%29O/file?format=sdf&get3d=True -- NC%28Cc1ccc%28Oc2ccc%28O%29c%28I%29c2%29c%28I%29c1%29C%28%3DO%29O could not be loaded.