Using CCCCOc1cc2c(cc1/C=C/C=C/C(C)=C/C(=O)OCC)C1(C)CCCC2(C)C1O to produce CCCCOc1cc2c(cc1/C=C/C=C/C(C)=C/C(=O)O)C1(C)CCCC2(C)C1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.