Using C=C(OCC)[Sn](CCCC)(CCCC)CCCC, Cn1ncc2cc(Cc3cnc4ccc(Cl)nn34)ccc21 to produce C=C(OCC)c1ccc2ncc(Cc3ccc4c(cnn4C)c3)n2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.