Symmetric Unequal Sudoku (618)

Instruction:

Apply classic sudoku rules. The digits placed in any pair of cells related by 180 degrees rotational symmetry (e.g. R1C2 and R9C8) must not repeat. A center of the symmetry is in the middle of the grid - cell in R5C5.

Reference: WPF (1)

Examples:

WPF Sudoku GP 2016 - Round 7 (37)

WPF Sudoku GP 2021 - Round 4 (160)

WPF Sudoku GP 2021 - Round 7 (163)

Parent puzzle:
Sudoku