∀ {R : Type u_1} [inst : CommRing R] (I : Ideal R) [inst_1 : I.IsPrime] ⦃x : Polynomial R⦄,
  (∃ i, x.coeff i ∉ I) →
    x ∈
      Submonoid.comap
        ((algebraMap (Polynomial I.ResidueField) (RatFunc I.ResidueField)).comp
          (Polynomial.mapRingHom (algebraMap R I.ResidueField)))
        (IsUnit.submonoid (RatFunc I.ResidueField))