Using CCOC(=O)/C(C)=C/CC[C@@H](C)[C@H]1CC[C@@]2(C)C3=CCC4C(C)(C)C(=O)CC[C@]4(C)C3=CC[C@]12C, OCCO to produce CCOC(=O)/C(C)=C/CC[C@@H](C)[C@H]1CC[C@@]2(C)C3=CCC4C(C)(C)C5(CC[C@]4(C)C3=CC[C@]12C)OCCO5, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.