Using C=CB1OC(C)(C)C(C)(C)O1, CC(C)(C)OC(=O)N(Cc1cc(Br)ccc1Cl)C1CC1 to produce C=Cc1ccc(Cl)c(CN(C(=O)OC(C)(C)C)C2CC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.