Using C=CCc1ccc(OCC(C)O)c2c(=O)cc(C(=O)OCC)oc12 to produce CCCc1ccc(OCC(C)O)c2c(=O)cc(C(=O)OCC)oc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.