∀ (S : Type u_2) (R : Type u_1) [inst : Semiring R] [inst_1 : StarMul R] [inst_2 : SMul S R]
  [inst_3 : IsScalarTower S R R] [inst_4 : SMulCommClass S R R],
  (let __RingEquiv := MulSemiringAction.toRingEquiv (ConjAct Rˣ) R (ConjAct.toConjAct (Unitary.toUnits 1));
    { toRingEquiv := __RingEquiv, map_star' := ⋯, map_smul' := ⋯ }) =
    1