XFL.frcmod

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MASS

BOND

ANGLE

DIHE
nb-ca-nv-hn   4    4.200       180.000           2.000      same as X -ca-nh-X , penalty score=  0.0
ca-ca-nv-hn   4    4.200       180.000           2.000      same as X -ca-nh-X , penalty score=  0.0

IMPROPER
c3-ca-ca-nb         1.1          180.0         2.0          Using the default value
ca-ca-ca-ha         1.1          180.0         2.0          Using general improper torsional angle  X- X-ca-ha, penalty score=  6.0)
ca-nb-ca-nv         1.1          180.0         2.0          Using the default value
ca-hn-nv-hn         1.1          180.0         2.0          Using the default value

NONBON