Fe11CoSn2Sb2 (space group: P4mm #99, crystal system: tetragonal, point group: 4mm) (missed expected composition: Fe11CoSn2Sb2)
Cell + Ionic relaxation with Orb v3; 0.03 eV/Å threshold; final energy = -101.2530 eV; energy change = -0.1154 eV; symmetry: P4mm → Pm