Using O=C(CNc1ccc(O)cc1)N1CCN(Cc2ccc3c(c2)OCO3)CC1, CCOC1(O[Si](C)(C)C)CC1 to produce O=C(CN(c1ccc(O)cc1)C1CC1)N1CCN(Cc2ccc3c(c2)OCO3)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.