Using O=C(c1cc(Br)c(O)c(Br)c1)N1CCOc2ccncc21, CC(=O)OCBr to produce COC(=O)COc1c(Br)cc(C(=O)N2CCOc3ccncc32)cc1Br, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.