3-[[N-[4-METHYL-PIPERAZINYL]CARBONYL]-PHENYLALANINYL-AMINO]-5-PHENYL-PENTANE-1-SULFONIC ACID BENZYLOXY-AMIDE CN1CCN(CC1)C(=O)N[C@@H](Cc2ccccc2)C(=O)N[C@@H](CCc3ccccc3)CCS(=O)(=O)NOCc4ccccc4 VS4