Using O=C(Nc1cc(/C=C/c2ccccc2)ccc1C(=O)O)c1ccccc1 to produce O=C(Nc1cc(CCc2ccccc2)ccc1C(=O)O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.