ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCOC%28%3DO%29C1%28c2ccccc2%29CCN%28C%29CC1/file?format=sdf&get3d=True  -- CCOC%28%3DO%29C1%28c2ccccc2%29CCN%28C%29CC1 could not be loaded.