Using O=C(c1c[nH]c(=O)c(Br)c1)N1CCOCC1, O=C([O-])[O-] to produce Cn1cc(C(=O)N2CCOCC2)cc(Br)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.