Using O=Cc1cccnc1, CC(C)(C)OC(=O)NC1CCc2cc(Br)ccc2C1 to produce CC(C)(C)OC(=O)NC1CCC2=C(C=CC(Br)(C(O)c3cccnc3)C2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.