Using CC(C)(C)OC(=O)N1C2CCC1CC(O)(c1cn([Si](C)(C)C(C)(C)C)c3ccccc13)C2 to produce C1=C(c2c[nH]c3ccccc23)CC2CCC1N2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.