Using CCCCCCc1c(C(=O)CCCC(=O)O)c(-c2ccccc2)c2n1CCC2 to produce CCCCCCc1c(CCCCC(=O)O)c(-c2ccccc2)c2n1CCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.