Using CCNCC, Cc1[nH]c2ccc(OC(C)(C)C(=O)O)cc2c1C(=O)OCc1ccccc1 to produce CCN(CC)C(=O)C(C)(C)Oc1ccc2[nH]c(C)c(C(=O)OCc3ccccc3)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.