Zengac

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:28001
http://www.hmdb.ca/metabolites/HMDB0014653
http://www.genome.jp/dbget-bin/www_bget?drug:D00212
http://www.genome.jp/dbget-bin/www_bget?cpd:C06689
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=14969
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46505261
https://www.chemspider.com/Chemical-Structure.14253.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=50335519
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=11124
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=28001
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL262777
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP001330
http://www.pharmgkb.org/drug/PA451850
http://www.rxlist.com/cgi/generic2/vancomycin.htm
https://www.drugs.com/vancomycin.html
https://en.wikipedia.org/wiki/Vancomycin