def get_isotopic_abundance_product(components):
    """
    Estimates the abundance of a molecule based on the abundance of the isotopic
    components.

    Returns
    -------
    :class:`float`

    Notes
    ------
    This is essentially a simplistic activity model.
    Isotopic abundances from periodictable are in %, and are hence divded by 100 here.
    """
    abund = 1.0
    for iso in components:
        abund *= iso.abundance / 100.0
    return abund