Using CCCCCCC#Cc1ccc2c(c1)CCN2C(=O)NCCC(=O)OCC to produce CCCCCCCCc1ccc2c(c1)CCN2C(=O)NCCC(=O)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.