Using CN(C)CCNC(=O)c1cccc2nc3ccc4c(OCCO[Si](C)(C)C(C)(C)C)cccc4c3nc12 to produce CN(C)CCNC(=O)c1cccc2nc3ccc4c(OCCO)cccc4c3nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.