Using COC(=O)c1ccc(-c2nc(NCc3ccc4c(c3)OCO4)c3cc(C)sc3n2)cc1 to produce Cc1cc2c(NCc3ccc4c(c3)OCO4)nc(-c3ccc(C(=O)O)cc3)nc2s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.