# CHARMM CCD
C1A C1B
C5A C5B
O5A O5B
C2A C2B
O2A O2B
C3A C3B
O3A O3B
C4A C4B
O4A O4'
C6A C6B
O6A O6B
C1B C1'
O1B O1'
C5B C5'
O5B O5'
C2B C2'
O2B O2'
C3B C3'
O3B O3'
C4B C4'
O4B O1B
C6B C6'
O6B O6'
