Using COC(OC)(OC)c1cnc2c(-c3cc(C(=O)O)sc3C)cnn2c1, CC(C)(C)OC(=O)N[C@@H]1CCCC(F)(F)[C@@H]1N to produce COC(OC)(OC)c1cnc2c(-c3cc(C(=O)N[C@@H]4[C@H](NC(=O)OC(C)(C)C)CCCC4(F)F)sc3C)cnn2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.