Using COC(=O)c1ccc(C=CC(=O)C=Cc2ccc(C(=O)OC)cc2)cc1 to produce COC(=O)c1ccc(CCC(=O)CCc2ccc(C(=O)OC)cc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.