Using COC(=O)c1ccc2c(c1)C(=O)C(/C=C1\C=CC=C(C(=O)O)C1)O2 to produce COC(=O)c1ccc2c(c1)C(=O)C(Cc1cccc(C(=O)O)c1)O2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.