density matrix: [[[[ 0.54239246 -0.00069108  0.00000947 -0.0006764  -0.00000019]
   [-0.00069108  0.54295558  0.00000486  0.0008286  -0.00002492]
   [ 0.00000947  0.00000486  0.57155761  0.00000454  0.00000002]
   [-0.0006764   0.0008286   0.00000454  0.5466635   0.00002474]
   [-0.00000019 -0.00002492  0.00000002  0.00002474  0.57284183]]]]
overlap matrix: [[[[ 1.00000008 -0.         -0.         -0.         -0.        ]
   [-0.          1.00000008  0.          0.          0.        ]
   [-0.          0.          1.00000008  0.         -0.        ]
   [-0.          0.          0.          1.00000008 -0.        ]
   [-0.          0.         -0.         -0.          1.00000008]]]]