RESIDUE   BC4     31
CONECT      CAA    2 CAC  H1  
CONECT      CAC    2 CAA  CAD 
CONECT      CAD    4 CAC  CAE  H2   H3  
CONECT      CAE    4 CAD  CAF  H4   H5  
CONECT      CAF    4 CAE  CAG  H6   H7  
CONECT      CAG    4 CAF  CAM  H8   H9  
CONECT      CAM    4 CAG  SAK  CAO  H10 
CONECT      SAK    2 CAM  CAH 
CONECT      CAH    4 SAK  CAN  H11  H12 
CONECT      CAN    4 CAH  CAO  NAI  H13 
CONECT      CAO    4 CAM  CAN  NAJ  H14 
CONECT      NAJ    3 CAO  CAL  H15 
CONECT      CAL    3 NAJ  OAB  NAI 
CONECT      OAB    1 CAL 
CONECT      NAI    3 CAN  CAL  H16 
CONECT      H1     1 CAA 
CONECT      H2     1 CAD 
CONECT      H3     1 CAD 
CONECT      H4     1 CAE 
CONECT      H5     1 CAE 
CONECT      H6     1 CAF 
CONECT      H7     1 CAF 
CONECT      H8     1 CAG 
CONECT      H9     1 CAG 
CONECT      H10    1 CAM 
CONECT      H11    1 CAH 
CONECT      H12    1 CAH 
CONECT      H13    1 CAN 
CONECT      H14    1 CAO 
CONECT      H15    1 NAJ 
CONECT      H16    1 NAI 
END   
HET    BC4             31
HETSYN     BC4 biotin acetylene
HETNAM     BC4 (3aS,4S,6aR)-4-(hex-5-yn-1-yl)tetrahydro-1H-thieno[3,4-
HETNAM   2 BC4 d]imidazol-2(3H)-one
FORMUL      BC4    C11 H16 N2 O1 S1