#! ADC/6-31G** on H2O

memory 250 mb

molecule h2o {
    O
    H 1 0.9584
    H 1 0.9584 2 104.45
    symmetry c1
}

set {
    reference rhf
    basis 6-31G**
    guess core
    roots_per_irrep [20]
}

energy('adc')
