Using CC(C)(C)OC(=O)N1CCC(Oc2cccc(NC(=O)c3c(F)cc(F)cc3F)n2)CC1 to produce O=C(Nc1cccc(OC2CCNCC2)n1)c1c(F)cc(F)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.