Using CC1=C(C(=O)OC(C)C)C(c2cccc([N+](=O)[O-])c2)c2c(nc[nH]c2=O)N1, C[O+](C)C to produce COc1ncnc2c1C(c1cccc([N+](=O)[O-])c1)C(C(=O)OC(C)C)=C(C)N2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.