{A : Type u_1} →
  [toNormedRing : NormedRing A] →
    [toStarRing : StarRing A] →
      [toCompleteSpace : CompleteSpace A] →
        [toCStarRing : CStarRing A] →
          [toNormedAlgebra : NormedAlgebra ℂ A] → [toStarModule : StarModule ℂ A] → CStarAlgebra A