Using CO[C@H]([C@@H](C)C(=O)NCCC1C=CC=CC=C1)[C@@H]1CCCN1C(=O)OC(C)(C)C to produce CO[C@@H]([C@@H]1CCCN1)[C@@H](C)C(=O)NCCC1C=CC=CC=C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.