This file is indexed.

/usr/share/doc/psi3/examples/mp2-opt.dat is in psi3 3.4.0-6.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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psi: (
  label = "6-31G** MP2 H2O"
  jobtype = opt
  wfn = mp2 
  reference = rhf
  multp = 1
  dertype = first
  basis = "6-31G**"
  zmat = (
    o
    h 1 1.00
    h 1 1.00 2 103.1
  )
)