RESIDUE   SVI     13
CONECT      N1     2 N    C1  
CONECT      N3     3 C4   C    C1  
CONECT      C4     3 N3   C3   H1  
CONECT      N      2 N1   C   
CONECT      C      3 N3   N    H2  
CONECT      C1     3 N1   N3   C2  
CONECT      C2     3 C1   N2   H3  
CONECT      C3     3 C4   N2   H4  
CONECT      N2     2 C2   C3  
CONECT      H1     1 C4  
CONECT      H2     1 C   
CONECT      H3     1 C2  
CONECT      H4     1 C3  
END   
HET    SVI             13
HETNAM     SVI (4S)-[1,2,4]triazolo[4,3-a]pyrazine
FORMUL      SVI    C5 H4 N4