Using CC(C)[C@H](O)CC[C@@H](C)[C@H]1CC[C@H]2[C@@H]3CC=C4C[C@@H](O)C[C@H](O)[C@]4(C)[C@H]3CC[C@]12C, CCOC(=O)Cl to produce CCOC(=O)O[C@@H]1CC2=CC[C@H]3[C@@H]4CC[C@H]([C@H](C)CC[C@@H](OC(=O)OCC)C(C)C)[C@@]4(C)CC[C@@H]3[C@@]2(C)[C@@H](OC(=O)OCC)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.