Using CCCC(=O)c1cc2c(c(Cl)c1Cl)OC(C(=O)O)C2, CNC to produce C=C(CC)C(=O)c1cc2c(c(Cl)c1Cl)OC(C(=O)O)C2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.