12
Benzene molecule
C        1.3960    0.0000    0.0000
C        0.6984    1.2092    0.0000
C       -0.6984    1.2092    0.0000
C       -1.3960    0.0000    0.0000
C       -0.6984   -1.2092    0.0000
C        0.6984   -1.2092    0.0000
H        2.4797    0.0000    0.0000
H        1.2400    2.1488    0.0000
H       -1.2400    2.1488    0.0000
H       -2.4797    0.0000    0.0000
H       -1.2400   -2.1488    0.0000
H        1.2400   -2.1488    0.0000
