Enter a species (e.g. Al, Fe): C Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: Sim_LAMMPS_ReaxFF_AnGoddard_2015_BC__SM_389039364091_000 Enter hexagonal lattice constants 'a' and 'c' (m): 2.339540787041187e-10, 3.820454107120182e-10