Using CCOC(=O)c1cn2c(n1)CN=C(c1ccccn1)c1cc(Br)ccc1-2 to produce OCc1cn2c(n1)CN=C(c1ccccn1)c1cc(Br)ccc1-2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.