Using CC(=O)N1CCC(O)(c2ccc3c(ccn3[Si](C(C)C)(C(C)C)C(C)C)c2)CC1 to produce CC(=O)N1CC=C(c2ccc3c(ccn3[Si](C(C)C)(C(C)C)C(C)C)c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.