Using COc1ccc2cc(-c3cc4c(cc3N)OCO4)ccc2c1, O=N[O-] to produce COc1ccc2c(ccc3c4cc5c(cc4nnc23)OCO5)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.