Using COc1ccc(Cc2oc3c(Cl)cc(C(C)(C)C)c(O)c3c2C)cc1 to produce COc1ccc(Cc2oc3c(Cl)ccc(O)c3c2C)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.