Using O=C(O)Cc1ccccc1, O=C(CBr)c1cnc(-c2ccccc2)nc1 to produce O=C(Cc1ccccc1)OCC(=O)c1cnc(-c2ccccc2)nc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.