Using CCOC(=O)CN1C(=O)[C@@H](NC(CCCCN2CCCCC2)C(=O)OCC)CSc2ccccc21 to produce O=C(O)CN1C(=O)[C@@H](NC(CCCCN2CCCCC2)C(=O)O)CSc2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.