Using O=C1N(Cc2c[nH]c3ccccc23)CCCC12CCNCC2, Brc1nc2ccccc2s1 to produce O=C1N(Cc2c[nH]c3ccccc23)CCCC12CCN(c1nc3ccccc3s1)CC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.