18

C          1.24000        0.60510       -0.36930
C          4.12120       -0.39310        1.91260
C          3.25120        1.83730        1.53810
C          4.86260        0.07120        3.00110
C          3.99690        2.30030        2.62550
C          2.52540       -0.06610        0.04260
C          3.30210        0.48330        1.18610
C          4.79260        1.41640        3.34730
O          2.93370       -1.06840       -0.54120
O          5.50250        1.91660        4.39740
H          1.40020        1.16270       -1.29540
H          0.85620        1.27440        0.40300
H          0.48140       -0.16690       -0.52940
H          4.17510       -1.44520        1.63570
H          2.65570        2.54930        0.97440
H          5.48080       -0.62570        3.55790
H          3.96300        3.34980        2.90610
H          6.04490        1.20450        4.77530
