question about the output file babel



Dear all,
 
I converted one Accelrys .car file into .pdb file with babel16, but the output file is quite strange, it is not the same as the pdb file from Protein Data Bank, for eg:
 
1. the atom name is just one character
2. the forth column of the coordinate of the atoms should be the residue the atom belongs to, but all the name of the residue in the output file is UNK.
 
can anyone tell me why?
 
thank you so much in advance!!
 
best regards,
Ru-Zhen