Using COc1ccc(Oc2c(Cl)cc(-n3ncc(=O)[nH]c3=O)cc2Cl)cc1C=O to produce O=Cc1cc(Oc2c(Cl)cc(-n3ncc(=O)[nH]c3=O)cc2Cl)ccc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.