Using c1cn[nH]c1, O=c1[nH]c2cc(Br)ccc2n2c(C3CCCCC3)ncc12 to produce O=c1[nH]c2cc(-n3cccn3)ccc2n2c(C3CCCCC3)ncc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.