Using COc1c(Cl)cc(C(C)(C)N(CC(C)=O)C(=O)Cc2ccccc2)cc1Cl to produce COc1c(Cl)cc(C(C)(C)N2CC(C)=C(c3ccccc3)C2=O)cc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.