Using CCOCC, Cc1ccc(-c2ccncc2)c(C(=O)N2CCC(=O)CC2)c1 to produce Cc1ccc(-c2ccncc2)c(C(=O)N2CCC(C)(O)CC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.