Using CC=O, C=CCOC(=O)c1ccc(NC2CCN(C(=O)OC(C)(C)C)CC2)c(N)c1 to produce C=CCOC(=O)c1ccc2c(c1)nc(C)n2C1CCN(C(=O)OC(C)(C)C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.