Sr2CuO2Cl2. Signifies a nearly perfect situation of a 2-D antiferromagnetic CuO2-plane and thus is of distinct interest from the context on the origins of higher TC superconductivity. We use The one-website impurity Anderson product with 5 Cu 3d orbitals and O 2p valence bands specified with the irreducible representations on https://okada4dsg.com/