tolerance 2.5
filetype pdb
output system_init.pdb

structure ../water/water_gaff.pdb
    number 100
    inside cube -8.113990804113833 -8.113990804113833 -8.113990804113833 16.227981608227665
    resnumbers 3
  end structure
structure ../urea/URA_gaff.pdb
    number 13
    inside cube -8.113990804113833 -8.113990804113833 -8.113990804113833 16.227981608227665
    resnumbers 3
  end structure