Using CC(C)(C)[Si](C)(C)c1ncc(C2(O)CCN(C(=O)OCc3ccccc3)CC2)s1 to produce CC(C)(C)[Si](C)(C)c1ncc(C2(O)CCNCC2)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.