Using CCc1c(-c2ccc(OCc3ccccc3)cc2)c2cc(C(=O)OC)c3c(NC(C)=O)ccc1n23 to produce CCc1c(-c2ccc(OCc3ccccc3)cc2)c2cc(C(=O)O)c3c(NC(C)=O)ccc1n23, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.