Using CC(=O)OC(C)=O, Cc1nc2cc(OCC(N)CN3CCN(C(=O)OC(C)(C)C)CC3)ccc2s1 to produce CC(=O)NC(COc1ccc2sc(C)nc2c1)CN1CCN(C(=O)OC(C)(C)C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.