Using CCOC(=O)n1c(C(C)=O)c(CCNC(C)=O)c2cc(OC)ccc21 to produce CCOC(=O)N1c2ccc(OC)cc2C(CCNC(C)=O)C1C(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.