Using CCOC(=O)[C@@H](CCCCC1CCN(C(=O)OC(=O)c2ccccc2)CC1)N[C@H]1CSc2ccccc2N(CC(=O)OC(C)(C)C)C1=O to produce CCOC(=O)[C@@H](CCCCC1CCNCC1)N[C@H]1CSc2ccccc2N(CC(=O)O)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.