  N   
  CA  
  C   
  O   
  CB  
  SG  
  C1  
  C2  
  C3  
  C4  
  C5  
  C6  
  C7  
  C8  
  C9  
  C10 
  C11 
  C12 
  C13 
  C14 
  C15 
