Using CCCCCCCCc1ccc2c(c1)CCC(C(NC(C)=O)(C(=O)OCC)C(=O)OCC)C2=O to produce CCCCCCCCc1ccc2c(c1)CCC(C(NC(C)=O)(C(=O)OCC)C(=O)OCC)C2O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.