APBS solvation energy example
&cntrl
   maxcyc=0, imin=1,
   cut=12.0,
   igb=6, ntb=0,
   ntpr=1,
 /
&apbs
    apbs_debug=0,
    apbs_print=1,
    dime = 33, 33, 33,
    cglen = 17.0071, 13.8706, 12.3012,
    fglen = 17.0071, 13.8706, 12.3012,
    cmeth=1,
 bcfl=1,
 srfm=2,
 chgm=1,
 pdie=2.0,
 sdie=78.54,
 radiopt=2, pqr='pqr',
&end
