Using O=Cc1cn(-c2ccc([N+](=O)[O-])cc2F)cn1, COC(OC)OC to produce COC(OC)c1cn(-c2ccc([N+](=O)[O-])cc2F)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.