Using COC(=O)C(Cc1ccc(OCCN(C)c2nc3ccccc3o2)cc1)SC to produce CSC(Cc1ccc(OCCN(C)c2nc3ccccc3o2)cc1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.