{Search for $ \mathrm{t}\overline{\mathrm{t}}\mathrm{H} $ production in the $ \mathrm{H}\to \mathrm{b}\overline{\mathrm{b}} $ decay channel with leptonic $ \mathrm{t}\overline{\mathrm{t}} $ decays in proton-proton collisions at $ \sqrt{s}=13 $ TeV}