P-1
From NWChem
group number = 2 group name = P-1 crystal system = Triclinic setting number = 1 number of symmetry operators = 2 +x,+y,+z -x,-y,-z = operator 1 = 1.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 1.0 0.0 = operator 2 = -1.0 0.0 0.0 0.0 0.0 -1.0 0.0 0.0 0.0 0.0 -1.0 0.0