Using C1COCCO1, O=C(O)c1ccnc(-c2cc([N+](=O)[O-])ccc2Cl)c1 to produce COC(=O)c1ccnc(-c2cc([N+](=O)[O-])ccc2Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.