Using O=C1c2ccccc2C(=O)N1CCBr, c1cc(N2CCNCC2)ccn1 to produce O=C1c2ccccc2C(=O)N1CCN1CCN(c2ccncc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.