Using CCOC(=O)C1CCN(Cc2ccccc2)CC1, CC(C)(C)OC(=O)N=NC(=O)OC(C)(C)C to produce CCOC(=O)C1(N(NC(=O)OC(C)(C)C)C(=O)OC(C)(C)C)CCN(Cc2ccccc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.