Using C[C@@H](O)[C@H]1C(=O)N2C(C(=O)OCc3ccc([N+](=O)[O-])cc3)C(=O)[C@H](C)[C@H]12, CN1C[C@H](S)CC1=S to produce C[C@@H](O)[C@H]1C(=O)N2C(C(=O)OCc3ccc([N+](=O)[O-])cc3)=C(S[C@@H]3CC(=S)N(C)C3)[C@H](C)[C@H]12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.