 6

 C      -2.77267899      -0.63007867       0.00450870
 C      -1.42591440      -0.54934027       0.06885630
 H      -3.25540576      -1.59647334      -0.01855569
 H      -3.36714976       0.27173812      -0.02389475
 H      -0.83144360      -1.45115706       0.09725976
 H      -0.94318759       0.41705441       0.09192070
