15

C    0.780612000  -0.609888000  -1.207543000
C    0.478404000   0.751041000  -1.207904000
C    0.327659000   1.431857000   0.000000000
C    0.478404000   0.751041000   1.207904000
C    0.780612000  -0.609888000   1.207543000
C    0.932151000  -1.289961000   0.000000000
H    0.896669000  -1.137605000  -2.144148000
H    0.357390000   1.278209000  -2.144055000
H    0.091859000   2.487141000   0.000000000
H    0.357390000   1.278209000   2.144055000
H    0.896669000  -1.137605000   2.144148000
H    1.169006000  -2.345167000   0.000000000
O   -2.788527000  -0.274485000   0.000000000
H   -2.622911000  -1.219083000   0.000000000
H   -1.901510000   0.097911000   0.000000000
