Using [N-]=[N+]=[N-], CC12CCC(=O)C=C1CCC1C2CCC2(C)C(C(=O)COC(=O)CCCCBr)CCC12 to produce CC12CCC(=O)C=C1CCC1C2CCC2(C)C(C(=O)COC(=O)CCCCN=[N+]=[N-])CCC12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.