set basis cc-pVDZ

molecule {
0 1
    C           -0.709089724488     0.948933557625     0.823038220813
    C           -1.432069718781     0.038803748751    -0.169577439119
    H            1.341293190340    -1.972944212734    -0.654182955603
    H           -1.287315512397     1.858067671037     1.004953010235
    C            0.702727554124     1.311373808340     0.320857085896
    H            2.412910080497     0.240611092901    -0.489355702046
    H            1.063176688455     0.350055072069    -1.594810461961
    H           -0.640659987189     0.434898970493     1.787377682701
    C           -0.702859842774    -1.311094263605    -0.321708693888
    H           -2.466480681314    -0.126594637923     0.141206057705
    H           -1.483836690158     0.545252826770    -1.138959135008
    C            0.818796754962    -1.182425494383    -0.110086651391
    H           -1.106160426967    -2.033585845320     0.393278873867
    H           -0.906040028285    -1.720254153989    -1.315274966618
    C            1.322501258308     0.194395746545    -0.542483480036
    H            1.061460730830    -1.330503606109     0.947292693163
    H            0.663485497250     2.236469873723    -0.260972898778
    H            1.348092347959     1.518680508219     1.178982932665
}

energy("HF")