4

C      -0.042106637483934      0.191786186075249      0.178955182286135
C       1.791408711356922      1.466540644255981      0.032535814990947
C       1.624722309033200      0.106092939059209      1.403494394236401
C      -0.194019751429673      1.321575979200357      1.292084558010627