Description of free format

Your file with molecule geometry and atom charges specification should look like the example below. atom_n can be either atom number (Z) or atom name (C, N, Mg, ...). Use spaces or tabs to separate items.
atom_1   x_coord     y_coord     z-coord     atom_charge
atom_2   x_coord     y_coord     z-coord     atom_charge
.
.
.
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atom_n   x_coord     y_coord     z-coord     atom_charge