Using CCOC(=O)C=C1c2ccccc2C=C(OC)c2sc(Cl)cc21 to produce COC1=Cc2ccccc2C(=CC(=O)O)c2cc(Cl)sc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.