Using CCOCc1nc2c(N)nc3cc(Br)ccc3c2n1CCCOC, c1cn[nH]c1 to produce CCOCc1nc2c(N)nc3cc(-n4cccn4)ccc3c2n1CCCOC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.