Enter a species  (e.g. Al, Fe): Si
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: SNAP_ZuoChenLi_2019_Si__MO_869330304805_000
Enter hexagonal lattice constants 'a' and 'c' (m): 2.627073635694853e-10, 4.628869894691402e-10