ERROR opening https://cactus.nci.nih.gov/chemical/structure/c1cc2c%28cc1OC%28F%29%28F%29F%29sc%28n2%29N/file?format=sdf&get3d=True  -- c1cc2c%28cc1OC%28F%29%28F%29F%29sc%28n2%29N could not be loaded.