Using CC(=O)N[C@@H](Cc1ccc(F)c(Br)c1)[C@H](O)CN[C@H]1CC2(CCC2)Oc2ncc(CC(C)(C)C)cc21, COC(OC)OC to produce CC(=O)N[C@@H](Cc1ccc(F)c(Br)c1)[C@H](O)CN(C)[C@H]1CC2(CCC2)Oc2ncc(CC(C)(C)C)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.