Using CC(C)(C)OC(=O)Nc1csc(-c2ccc(-c3scc(NC(=O)OC(C)(C)C)c3NC(=O)OC(C)(C)C)cc2)c1NC(=O)OC(C)(C)C to produce Nc1csc(-c2ccc(-c3scc(N)c3N)cc2)c1N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.