Using COc1ccc(C(=O)Nc2c(Cl)cccc2Cl)c2cc(C(=O)c3ccccc3)oc12 to produce O=C(c1ccccc1)c1cc2c(C(=O)Nc3c(Cl)cccc3Cl)ccc(O)c2o1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.