Using CC1(C)OB(c2cccc(C=C3c4ccc(Cl)cc4CCc4cccnc43)c2)OC1(C)C, CC(=O)O to produce Oc1cccc(C=C2c3ccc(Cl)cc3CCc3cccnc32)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.