def get_mtfe_derived_W_solv_max(FOS_offset, original_fos,
    solvation_group_count, PRO_PEP):
    """
    FOSS_offset is the off

    """
    original_fos = 0.0
    solvation_groups = list(original_fos.keys())
    BB_count = 0
    BB_PRO_count = 0
