Using CCOC(=O)c1cn(C(=O)OC(C)(C)C)c2c1C(=O)C(C(C)=O)CCC2, NO to produce CCOC(=O)c1c[nH]c2c1-c1onc(C)c1CCC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.