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

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

set {
    basis           6-31G**
    reference       rhf
    scf_type        pk
    mcscf_algorithm ah
    qc_module       detci
    nat_orbs        True
}

cisd_energy, cisd_wfn = energy("CISD", return_wfn=True)


set {
    restricted_docc [1, 0, 0, 0]
    active          [3, 0, 1, 2] 
}
casscf_energy = energy('casscf', ref_wfn=cisd_wfn)