Using C[C@@H](NCCn1cc(NC(=O)c2cnn3cccnc23)c(-c2cc(Cl)ccc2OC(F)F)n1)c1ccccc1, COC(=O)CN to produce COC(=O)CNCCn1cc(NC(=O)c2cnn3cccnc23)c(-c2cc(Cl)ccc2OC(F)F)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.