Using NO, CC1(COc2ccc(Cc3nnn[nH]3)cc2)CCCCC1=O to produce CC1(COc2ccc(Cc3nnn[nH]3)cc2)CCCCC1=NO, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.