4

Ar     -0.291340564222745     -0.134497887636506      0.222770837519064
Ar      1.310843766726636      1.308628102820145      0.195819204081889
Ar      1.271850091681324      0.422596360843822      1.301262330459124
Ar     -0.145975214142782      1.334963407668596      1.117071295819763