Using COCCNc1nonc1-c1noc(=O)n1-c1ccc(F)c(Br)c1 to produce O=c1onc(-c2nonc2NCCO)n1-c1ccc(F)c(Br)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.