Using O=C1c2ccccc2C(=O)N1CCCCBr, CN1CS(=O)c2cc(CCN)ccc21 to produce CN1CS(=O)c2cc(CCNCCCCN3C(=O)c4ccccc4C3=O)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.