Using COC(=O)CC[C@@H](C)[C@H]1CC[C@H]2[C@@H]3C(=O)C=C4C[C@@H](O[Si](C(C)C)(C(C)C)C(C)C)CC[C@]4(C)[C@H]3CC[C@]12C to produce CC(C)[Si](O[C@H]1CC[C@@]2(C)C(=CC(=O)[C@H]3[C@@H]4CC[C@H]([C@H](C)CCC(=O)O)[C@@]4(C)CC[C@@H]32)C1)(C(C)C)C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.