Using CC(=O)O[C@@H]1CC[C@@]2(C)[C@@H](CC[C@H]3[C@@H]4CC[C@H](C(C)=O)[C@@]4(C)C[C@@H]4O[C@@]432)C1, Cl to produce CC(=O)O[C@@H]1CC[C@@]2(C)[C@@H](CC[C@H]3[C@@H]4CC[C@H](C(C)=O)[C@@]4(C)C[C@H](O)[C@@]32Cl)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.