Using CCCCC=Nn1c(C(=O)OC)c(-c2ccccc2)c2cc(Cl)ccc2c1=O to produce CCCCCNn1c(C(=O)OC)c(-c2ccccc2)c2cc(Cl)ccc2c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.