Using C[C@H]1CN(c2ccncc2NC(=O)c2nc3cc(C4=CCOCC4)ccc3cc2NC(=O)OCc2ccccc2)C[C@@H](NC(=O)OC(C)(C)C)[C@@H]1O[Si](C)(C)C(C)(C)C to produce C[C@H]1CN(c2ccncc2NC(=O)c2nc3cc(C4CCOCC4)ccc3cc2N)C[C@@H](NC(=O)OC(C)(C)C)[C@@H]1O[Si](C)(C)C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.