Copper

http://classyfire.wishartlab.com/tax_nodes/C0000001
http://classyfire.wishartlab.com/tax_nodes/C0000424
http://classyfire.wishartlab.com/tax_nodes/C0000443
http://classyfire.wishartlab.com/tax_nodes/C0000588
http://classyfire.wishartlab.com/tax_nodes/C0000588
http://classyfire.wishartlab.com/tax_nodes/C0004103
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:49553
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=24014
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=310265046
https://www.chemspider.com/Chemical-Structure.22447.html
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=150596
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=49553
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL1200553
https://www.ebi.ac.uk/pdbe-srv/pdbechem/chemicalCompound/show/CUL