Using CCOC(=O)CC1c2ccccc2C(=O)NN1CBr, [N-]=[N+]=[N-] to produce CCOC(=O)CC1c2ccccc2C(=O)NN1CN=[N+]=[N-], please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.