ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1/C5H5N5/c6-4-3-5(9-1-7-3)10-2-8-4/h1-2H,(H3,6,7,8,9,10)/f/h9H,6H2 (9H-Adénine)/file?format=sdf&get3d=True  -- InChI=1/C5H5N5/c6-4-3-5(9-1-7-3)10-2-8-4/h1-2H,(H3,6,7,8,9,10)/f/h9H,6H2 (9H-Adénine) could not be loaded.