Quine

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:3638
http://www.hmdb.ca/metabolites/HMDB0014746
http://www.genome.jp/dbget-bin/www_bget?drug:D02366
http://www.genome.jp/dbget-bin/www_bget?cpd:C07625
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=2719
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46506925
https://www.chemspider.com/Chemical-Structure.2618.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=22985
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=2393
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=3638
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL76
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP001357
http://www.pharmgkb.org/drug/PA448948
https://www.ebi.ac.uk/pdbe-srv/pdbechem/chemicalCompound/show/CLQ
http://www.rxlist.com/cgi/generic2/hquine2.htm
https://www.drugs.com/cdi/chloroquine.html
https://en.wikipedia.org/wiki/Chloroquine