Using CN(C)C=Nc1nc(N2CCN(C(=O)OC(C)(C)C)CC2)ncc1Br, NO to produce CC(C)(C)OC(=O)N1CCN(c2ncc(Br)c(N=CNO)n2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.