%nprocshared=40
%mem=100000MB
%oldchk=zu_BD.chk
%chk=u_BD.chk
#p opt=(readfc,maxstep=1,verytight) freq=noraman B3LYP/Def2TZVPP/fit EmpiricalDispersion=GD3 scf=xqc guess=read nosymm geom=allcheck