Using CC1(C)Cc2c(Br)cccc2C(c2cnc3ccccc3c2)=N1, C=C(OCC)[Sn](CCCC)(CCCC)CCCC to produce CC(=O)c1cccc2c1CC(C)(C)N=C2c1cnc2ccccc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.