Using CC(C)(C)OC(=O)c1c(N2CCCCC2)nc2ccc(Cl)cc2c1-c1cccc(Cl)c1 to produce O=C(O)c1c(N2CCCCC2)nc2ccc(Cl)cc2c1-c1cccc(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.