Using CCOC(=O)c1cc(=O)c2c(C(=O)OC)ccc(Cl)c2[nH]1 to produce O=C(O)c1cc(=O)c2c(C(=O)O)ccc(Cl)c2[nH]1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.