4

C      -0.134497887636506     -0.211973806835931      0.222770837519064
C       1.685843766726636      1.683628102820145      0.195819204081889
C       1.646850091681324      0.422596360843822      1.634008918170972
C      -0.145975214142782      1.628484982800442      1.492071295819763