Using O=C(Cl)OCCCl, Nc1cc(Nc2nccc(C(F)(F)F)n2)cc(-c2ccc([C@@H](O)C(F)F)cc2)c1 to produce O=C1OCCN1c1cc(Nc2nccc(C(F)(F)F)n2)cc(-c2ccc([C@@H](O)C(F)F)cc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.