Using CCOC(=O)c1ncn(CCC(=O)NC(C)(C)c2ccc(Cl)cc2)c1C to produce Cc1c(CO)ncn1CCCNC(C)(C)c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.