Using CCOC(=O)c1c(-c2ccc(Cl)c(Cl)c2)csc1N1C(=O)c2ccccc2C1=O to produce O=C(O)c1c(-c2ccc(Cl)c(Cl)c2)csc1N1C(=O)c2ccccc2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.