Using O=[N+]([O-])[O-], COc1ccc2c(c1)C(C)(C)CN2C(C)=O to produce COc1cc2c(cc1[N+](=O)[O-])N(C(C)=O)CC2(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.