Using O=S1(=O)N(CCBr)c2ccccc2N1c1ccccc1F, CNCCN(C)C(=O)OC(C)(C)C to produce CN(CCN(C)C(=O)OC(C)(C)C)CCN1c2ccccc2N(c2ccccc2F)S1(=O)=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.