def convert_list_to_xyz_str(atoms: list):
    """Convert nested list of atom and coordinates list into xyz-string.

    Args:
        atoms (list): Atom list of type `[['H', 0.0, 0.0, 0.0], ['C', 1.0, 1.0, 1.0], ...]`.

    Returns:
        str: Information in xyz-string format.
    """
    xyz_str = str(int(len(atoms))) + "\n"
    for a_iter in atoms:
        xyz_str = xyz_str + "\n"
        _line_str = "{:} {:.10f} {:.10f} {:.10f}".format(*a_iter)
        xyz_str = xyz_str + _line_str
    return xyz_str