RESIDUE   XGV     12
CONECT      N01    3 C02  H011 H012
CONECT      C02    3 N01  C03  N07 
CONECT      C03    3 C02  C04  H031
CONECT      C04    3 C03  C05  H041
CONECT      C05    3 C04  N06  H051
CONECT      N06    2 C05  N07 
CONECT      N07    2 C02  N06 
CONECT      H011   1 N01 
CONECT      H012   1 N01 
CONECT      H031   1 C03 
CONECT      H041   1 C04 
CONECT      H051   1 C05 
END   
HET    XGV             12
HETNAM     XGV pyridazin-3-amine
FORMUL      XGV    C4 H5 N3