Using FC(F)(F)CI, Cc1ccn2nc([C@H](C)Nc3ncnc(N)c3-c3cncc(O)c3)n(-c3ccccc3)c(=O)c12 to produce Cc1ccn2nc([C@H](C)Nc3ncnc(N)c3-c3cncc(OCC(F)(F)F)c3)n(-c3ccccc3)c(=O)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.