Using COC(=O)c1nc(-c2cc(OC)c(OC)c(OC)c2)nc2cc(OC)c(OC)cc12 to produce COc1cc2nc(-c3cc(OC)c(OC)c(OC)c3)nc(C(=O)O)c2cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.