Using O=CN1CC=C(c2ccc(N3C[C@H](CN(C(=O)OCC(Cl)(Cl)Cl)c4ccon4)OC3=O)cc2F)CC1 to produce O=CN1CC=C(c2ccc(N3C[C@H](CNc4ccon4)OC3=O)cc2F)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.