Using CCOC(=O)c1ccc(Nc2nc(C)c3ccc(=O)n(-c4ccc(C(=O)OC(C)(C)C)cc4)c3n2)cc1 to produce COC(=O)c1ccc(Nc2nc(C)c3ccc(=O)n(-c4ccc(C(=O)OC)cc4)c3n2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.