Using CCOC(=O)c1cc2c(s1)CCN(C(=O)OC(C)(C)C)C2, NO to produce CC(C)(C)OC(=O)N1CCc2sc(C(=O)NO)cc2C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.