Using CCOC(=O)C1(CC(=O)O)C(=O)N(Cc2ccc(Br)cc2F)C(=O)c2cccn21, O=C1CCC(=O)N1O to produce CCOC(=O)C1(CC(N)=O)C(=O)N(Cc2ccc(Br)cc2F)C(=O)c2cccn21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.