Using O=C(N1CCc2ccc(Br)cc2C1)C(F)(F)F, C=CC(=O)OCC to produce CCOC(=O)C=Cc1ccc2c(c1)CN(C(=O)C(F)(F)F)CC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.