mol_name: The name of the new molecule.
mol_type: The type of molecule.
This adds a new molecule data container to the relax data storage object. The same molecule name cannot be used more than once. The molecule type need not be specified. However, if given, it should be one of `protein', `DNA', `RNA', `organic molecule', or `inorganic molecule'.
To create the molecules `Ap4Aase', `ATP', and `MgF4', type:
[numbers=none] relax> molecule.create('Ap4Aase')
[numbers=none] relax> molecule.create('ATP')
[numbers=none] relax> molecule.create('MgF4')