Using COC(=O)CCCCCCc1nc2ccc(-c3ccccc3)cc2[nH]1, NO to produce O=C(CCCCCCc1nc2ccc(-c3ccccc3)cc2[nH]1)NO, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.