Using COc1ccc2c(-c3ccccc3)csc2c1, O=C(Cl)c1ccccc1 to produce COc1ccc2c(-c3ccccc3)c(C(=O)c3ccccc3)sc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.