source leaprc.protein.ff14SB
source leaprc.gaff
set default PBRadii mbondi3
loadAmberPrep cyl.prepin
loadAmberParams frcmod.cyl
#loadAmberParams frcmod1.cyl
x = loadPDB comp.pdb
saveAmberParm x gfp.parm7 gfp.rst7
quit
