18

C          1.04950       -0.02160        0.00530
C          2.56130       -2.58380       -0.15220
C          4.64680        1.18930       -0.18430
C          5.35260       -0.00690       -0.25830
C          3.25510        1.17180       -0.09740
C          4.66700       -1.22130       -0.24530
C          2.55090       -0.04260       -0.08180
C          3.26640       -1.25520       -0.15700
H          0.66590        1.00070        0.09070
H          0.61140       -0.46570       -0.89410
H          0.71040       -0.57270        0.88800
H          1.90840       -2.66970       -1.02650
H          1.96790       -2.69790        0.76040
H          3.27200       -3.41640       -0.18660
H          5.17860        2.13660       -0.19520
H          6.43690        0.00410       -0.32740
H          2.72050        2.11750       -0.04240
H          5.23620       -2.14620       -0.30590
