Using Oc1cnc(-c2nn(Cc3ccccc3F)c3ccccc23)nc1Nc1ccncc1, OCC(O)CBr to produce OCC1COc2cnc(-c3nn(Cc4ccccc4F)c4ccccc34)nc2N1c1ccncc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.