Using S=c1cc[nH]c2ccccc12, O=C(CBr)c1ccc(OCc2ccccc2)cc1 to produce O=C(CSc1ccnc2ccccc12)c1ccc(OCc2ccccc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.