13
 
C     0.0448451   -1.1318212    0.0000000 
C     1.2587199   -0.4475670    0.0000000 
C     1.2676616    0.9385633    0.0000000 
C     0.0783101    1.6579315    0.0000000 
C    -1.1270998    0.9694567    0.0000000 
C    -1.1509464   -0.4186228    0.0000000 
O     0.0894230   -2.4781674    0.0000000 
H     2.1893713   -1.0038289    0.0000000 
H     2.2169752    1.4613565    0.0000000 
H     0.0918620    2.7408200    0.0000000 
H    -2.0639475    1.5140924    0.0000000 
H    -2.1009529   -0.9440328    0.0000000 
H    -0.7942217   -2.8581803    0.0000000 
