Using C[Si](C)(C)CS[C@@]1(c2ccc(-c3ccccc3)cc2)C[C@@H](C(=O)O)N(C(=O)OCc2ccccc2)C1 to produce CS[C@@]1(c2ccc(-c3ccccc3)cc2)C[C@@H](C(=O)O)N(C(=O)OCc2ccccc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.