Using O=C1c2sc(-c3ccc(Cl)cc3)nc2CCN1c1ccc2[nH]ccc2c1, BrCc1ccccn1 to produce O=C1c2sc(-c3ccc(Cl)cc3)nc2CCN1c1ccc2c(ccn2Cc2ccccn2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.