Using CN(C)Cc1c[nH]c2ccccc12, CCOC(=O)CC(C(=O)OCC)C(=O)OCC to produce O=C(O)CC(Cc1c[nH]c2ccccc12)(C(=O)O)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.