Using C[Si](C)(C)CCOC(=O)OC1CN(C(=O)OCC[Si](C)(C)C)CCC1c1cccc(Br)c1 to produce OC1CNCCC1c1cccc(Br)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.