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#! CASSCF/6-31G** energy point

molecule {
O
H 1 1.00
H 1 1.00 2 103.1
}

set {
    reference       rhf
    mcscf_type      df
    frozen_docc     [1, 0, 0, 0]
    active          [3, 0, 1, 2] 
    basis           6-31G**
    nat_orbs        True
}

casscf_energy, cas_wfn = energy('casscf', return_wfn=True)


cas_orbs = cas_wfn.get_orbitals("ACT")