Fe2MnB (space group: Pmmm #47, crystal system: orthorhombic, point group: mmm) (missed expected composition: Fe2MnB)
Relaxed with Orb v3; 0.03 eV/Å threshold; final energy = -31.9600 eV; energy change = 0.0000 eV; symmetry: Pmmm → Pmmm