Structure based on 2noa

Ideal structure
Name: 4-amino-1-[(2r,5s)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]pyrimidin-2(1h)-one
Formula: C8 H11 N3 O3 S
Weight: 229.256
SMILES: "NC1=NC(=O)N(C=C1)[CH]2CS[CH](CO)O2"
Spacial conformation based on PDB 2noa
RESIDUE   3TC     26
CONECT      O1     1 C1  
CONECT      C1     3 O1   N2   N1  
CONECT      N2     2 C1   C3  
CONECT      C3     3 N2   N3   C5  
CONECT      N3     3 C3   HN31 HN32
CONECT      C5     3 C3   C7   H5  
CONECT      C7     3 C5   N1   H7  
CONECT      N1     3 C1   C7   C4  
CONECT      C4     4 N1   C6   O2   H4  
CONECT      C6     4 C4   S1   H61  H62 
CONECT      O2     2 C4   C2  
CONECT      C2     4 O2   S1   C8   H2  
CONECT      S1     2 C6   C2  
CONECT      C8     4 C2   O3   H81  H82 
CONECT      O3     2 C8   HO3 
CONECT      HN31   1 N3  
CONECT      HN32   1 N3  
CONECT      H5     1 C5  
CONECT      H7     1 C7  
CONECT      H4     1 C4  
CONECT      H61    1 C6  
CONECT      H62    1 C6  
CONECT      H2     1 C2  
CONECT      H81    1 C8  
CONECT      H82    1 C8  
CONECT      HO3    1 O3  
END   
HET    3TC             26
HETSYN     3TC (-)-L-2',3'-DIDEOXY-3'-THIACYTIDINE; LAMIVUDINE; EPIVIR
HETNAM     3TC 4-AMINO-1-[(2R,5S)-2-(HYDROXYMETHYL)-1,3-OXATHIOLAN-5-Y
HETNAM   2 3TC L]PYRIMIDIN-2(1H)-ONE
FORMUL      3TC    C8 H11 N3 O3 S1

This OCA MONOMER page
uses Jmol, developed by the Jmol Development Team (color reference)
OCA© by Jaime Prilusky, 1996-2004,2006,2010,2014
Bioinformatics Unit
Weizmann Institute of Science