Using C1COCCO1, COc1ccc2c(c1)C(C)(C)c1[nH]c3cc(Cl)c(Cl)cc3c1C2 to produce COc1ccc2c(c1)C(C)(C)c1[nH]c3cc(Cl)c(Cl)cc3c1C2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.