Using O=C([O-])[O-], CCCc1cc(-c2cc(=O)oc3cc(OC)ccc23)ccc1Oc1cccc([C@@]2(C)OC(=O)NC2=O)c1 to produce COc1ccc2c(-c3ccc(Oc4cccc([C@@]5(C)OC(=O)NC5=O)c4)c(C=O)c3)cc(=O)oc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.