Using COC(=O)c1ccc(Cc2c(C)c(OC)c(OC)c(OC)c2OC)cc1-c1cccnc1 to produce COc1c(C)c(Cc2ccc(C(=O)O)c(-c3cccnc3)c2)c(OC)c(OC)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.