Using ClCC(CCl)OC(CCl)CCl, c1ccc2c(c1)c1ccccc1c1ccccc21 to produce O=Cc1ccc2c3ccccc3c3ccccc3c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.