Using CC(C)(C)OC(=O)N(CCc1ccc(C(=O)N[C@@H](CCCNCc2ccccn2)C(=O)O)cc1)Cc1ccccn1 to produce O=C(N[C@@H](CCCNCc1ccccn1)C(=O)O)c1ccc(CCNCc2ccccn2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.