ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1%28C2%28CCCCC2%29N3CCCCC3%29%3DCC%3DCS1/file?format=sdf&get3d=True  -- C1%28C2%28CCCCC2%29N3CCCCC3%29%3DCC%3DCS1 could not be loaded.