Using Cn1cc(-c2cc(C(=O)OCc3ccccc3)c(OCc3ccccc3)cc2C(=O)N2CCCCC2)cn1 to produce Cn1cc(-c2cc(C(=O)O)c(OCc3ccccc3)cc2C(=O)N2CCCCC2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.