4

C      -0.111743180504805      0.191786186075249      0.178955182286135
C       1.791408711356922      1.466540644255981      0.032535814990947
C       1.649046894850527      0.169392205815400      1.466039972913158
C      -0.194019751429673      1.321575979200357      1.513615980846801