Using COC(c1ccco1)c1c(Cl)ccc(C(=O)OC(C)(C)C)c1Cl to produce COC(c1ccco1)c1c(Cl)ccc(C(=O)O)c1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.