Using CC(C)(C)OC(=O)N1CCC(NCCc2cccnc2[N+](=O)[O-])CC1, CO to produce CC(C)(C)OC(=O)N1CCC(N2CCc3cccnc3NC2=O)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.