∀ {R : Type u_1} [inst : Monoid R] {S : Submonoid R} [inst_1 : OreLocalization.OreSet S] {X : Type u_2}
  [inst_2 : MulAction R X],
  OreLocalization.instMulActionOreLocalization = { toSMul := OreLocalization.instSMul, mul_smul := ⋯, one_smul := ⋯ }