Using C=C(OCC)[Sn](CCCC)(CCCC)CCCC, CC(C)(C)OC(=O)N1CCC[C@H]1COc1cnc(Cl)c(Br)c1 to produce C=C(OCC)c1cc(OC[C@@H]2CCCN2)cnc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.