Using O=S(=O)(NCCNCC=Cc1ccc(Cl)cc1)c1cccc2cnccc12, BrCCBr to produce O=S(=O)(c1cccc2cnccc12)N1CCN(CC=Cc2ccc(Cl)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.