(1'S,2'S,2 S,9S,11R)-11-[2 -[[N-[(BENZYLOXY)CARBONYL]VALYL]AMINO]-1'-HYDROXY-3'-PHENYLPROP-1'-YL]-8-(1-METHYLETHYL)-6,9,12-TRIAZA-1-OXA-7,10-DIOXO[13]PARACYCLOPHANE