Using CN1CCN=C(C=Cc2cc([N+](=O)[O-])ccc2SCc2ccccc2)c2ccccc21, Cl[Sn]Cl to produce CN1CCN=C(/C=C/c2cc(N)ccc2SCc2ccccc2)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.