ERROR opening https://cactus.nci.nih.gov/chemical/structure/Cl%5BRe-2%5D%28Cl%29%28Cl%29%28%3DO%29%28%5BP%2B%5D%28c1ccccc1%29%28c1ccccc1%29c1ccccc1%29%5BP%2B%5D%28c2ccccc2%29%28c2ccccc2%29c2ccccc2/file?format=sdf&get3d=True -- Cl%5BRe-2%5D%28Cl%29%28Cl%29%28%3DO%29%28%5BP%2B%5D%28c1ccccc1%29%28c1ccccc1%29c1ccccc1%29%5BP%2B%5D%28c2ccccc2%29%28c2ccccc2%29c2ccccc2 could not be loaded.