Using CC(=O)OC(C)=O, C=CCNCCNC(=O)N1CCN2C(=O)OC(c3ccccc3)(c3ccccc3)C2C1 to produce C=CCN(CCNC(=O)N1CCN2C(=O)OC(c3ccccc3)(c3ccccc3)C2C1)C(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.