BTR
ATOM  N    CA   C    O    OXT  CB   CG   CD1  NE1  CE2
ATOM  CD2  CE3  CZ3  CH2 BR2   CZ2
CONNECT -  N    CA  C  O +
CONNECT  CA   CB  CG  CD1  NE1  CE2  CD2  CG
CONNECT  C    OXT
CONNECT  CE2  CZ2  CH2  CZ3  CE3  CD2
CONNECT  CH2 BR2