ERROR opening https://cactus.nci.nih.gov/chemical/structure/n1%28cc%28c%28c2ccc%28cc12%29c1ccncc1%29%3DO%29C%28%3DO%29O%29CC/file?format=sdf&get3d=True  -- n1%28cc%28c%28c2ccc%28cc12%29c1ccncc1%29%3DO%29C%28%3DO%29O%29CC could not be loaded.