%mem=500MB
%nproc=1
%chk=/work/callan/butadiene/tutorialfiles/butadienecas.chk
#P CAS(4,4,nroot=2,stateaverage) STO-3G nosymm IOP(5/97=100,10/97=100) geom=checkpoint guess=read

butadiene casscf stateaveraged orbitals

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