L-thymidine

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:63624
http://www.hmdb.ca/metabolites/HMDB0015394
http://www.genome.jp/dbget-bin/www_bget?drug:D06675
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=159269
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46508706
https://www.chemspider.com/Chemical-Structure.140081.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=50088372
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=474128
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=63624
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL374731
https://zinc.docking.org/substances/ZINC000000002159
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000698
http://www.pharmgkb.org/drug/PA164760861
https://www.ebi.ac.uk/pdbe-srv/pdbechem/chemicalCompound/show/LLT
http://www.rxlist.com/cgi/generic/tyzeka.htm
https://www.drugs.com/cdi/telbivudine.html
https://en.wikipedia.org/wiki/Telbivudine