a test SYSTEM file for O3 + Cl
enter the number of atoms
4
enter the chemical symbols for the atoms, separated by commas
O,O,O,Cl
enter the atomic masses in amu
15.9949  15.9949 15.9949 34.9688
enter the bond lengths, in order, which give the cutoff for a 
real bond to exist between atoms i and j. Use units chosen in CNT.
4.0d0
4.0d0
4.0d0
3.d0
3.d0
3.d0
!!! charge,multiplicity
0,2
!!! ab initio method for level one
#p ump2
!!! basis for ab initio level one
aug-cc-pVDZ
!!! memory for ab initio level one
%mem=36000000
!!! scf convergence for ab initio level one
SCF=(Tight,maxcycle=2000,Conver=9)
!!! stability test for ab initio level one
stable=(opt)
!!! ab initio method for level two (basis set correction)
#p ump2
!!! basis for ab initio level two (basis set correction)
aug-cc-pVDZ
!!! memory for ab initio level two (basis set correction)
%mem=36000000
!!! scf convergence for ab initio level two (basis set correction)
SCF=(Tight,maxcycle=2000,Conver=9)
!!! stability test for ab initio level two
stable=(opt)
!!! ab initio higher level method
#p uqcisd(maxcyc=200,Conver=7)
!!! basis set for ab initio higher level
aug-cc-pVDZ
!!! memory for ab initio higher level
%mem=36000000
!!! scf convergence for ab initio higher level
SCF=(Tight,maxcycle=2000,Conver=9)
!!! stability test for ab initio higher level
stable=(opt)
