Using C[C@@H](c1ccc(Br)cc1)N1CC[C@](CCCO)(c2ccccc2)OC1=O, C=C[Sn](CCCC)(CCCC)CCCC to produce C=Cc1ccc([C@H](C)N2CC[C@](CCCO)(c3ccccc3)OC2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.