Using CCCN(Cc1ccc(-c2ccccc2-c2nnn[nH]2)cc1)C(=O)CCC(C)(C)C(=O)OC to produce CCCN(Cc1ccc(-c2ccccc2-c2nnn[nH]2)cc1)C(=O)CCC(C)(C)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.