Using C=COC(=O)N1CC(=O)C2=C(C1)NC1=C(C(=O)COC1)C2c1ccc(F)c(Br)c1 to produce O=C1CNCC2=C1C(c1ccc(F)c(Br)c1)C1=C(COCC1=O)N2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.