Using O=C(Cc1ccccc1)OC(Nc1c(Cl)cccc1Cl)C(=O)OCc1ccccc1 to produce O=C(Cc1ccccc1)OC(Nc1c(Cl)cccc1Cl)C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.