)  00                                                                                                   **0b**·(*S*,*S*)-**0a**favoured     0.00 or 0.00[\*](#t0-fn0){ref-type="fn"}                                     0            (*R*,*R*,***S***,***S***,*R*,*R*)-**0b** (NHCO-*c*Hex) and **0a** (