Using CCc1nc([C@H]2CC[C@@H](C(C)(C)C)CC2)n2nc(-c3cccc(Br)c3)[nH]c(=O)c12, C=CC(=O)OCC to produce CCOC(=O)/C=C/c1cccc(-c2nn3c(c(CC)nc3[C@H]3CC[C@@H](C(C)(C)C)CC3)c(=O)[nH]2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.