 nc:  number of components
           2
 np:  number of potentials
           4
 nmn:  number of non-bonded modes
           3
 nms:  number of stretching modes
           2
 nmb:  number of bending modes
           2
 nmt:  number of torsion modes
           1
 nm5:  number of 5-atom modes
           0
 nm6:  number of 6-atom modes
           0
 nm7:  number of 7-atom modes
           0
 list of modes 
a C       2
a H       6
N C  C       1
N C  H       1
N H  H       1
S C  C       1
S C  H       6
B C  C  H       6
B H  C  H       6
T H  C  C  H       9
