[input]
system=
 8   0.000000000   0.000000000  -0.041061554
 1  -0.533194329   0.533194329  -0.614469223
 1   0.533194329  -0.533194329  -0.614469223

charge=0
method=mp2
basis=6-31g
runtype=energy
functional=

[guess]
type=huckel
save_mol=false

[scf]
type=uhf
multiplicity=1
maxit=50
conv=1.0e-10
save_molden=false

[mp2]
variant=mp2