Example from Firefly/PC Gamess_Windows

  Viagra® (Sildenafil): 1-[[3-(6,7-dihydro-1-methyl-
7-oxo-3-propyl-1Hpyrazolo[ 4,3-d]pyrimidin-5-yl)-
4-ethoxyphenyl]sulfonyl]-4-methylpiperazine (neutral
base: C22H30N6O4S)

Gamess computed an optimized structure in a
HF-SCF run with 6-31G* basis set (gas phase,
559 basis fcts, 15.2h, P4/3GHz, RMS 0.0000025):
     ONE ELECTRON ENERGY =  -9963.0007811145
     TWO ELECTRON ENERGY =   4370.2838287410
NUCLEAR REPULSION ENERGY =   3718.5709161330
                           -----------------
            TOTAL ENERGY =  -1874.1460362404 Eh