Using COC(=O)[C@@H](NC(=O)OCC1c2ccccc2-c2ccccc21)[C@@H](C)O, CCCc1ccsc1C1(O)c2ccccc2-c2ccccc21 to produce CCCc1ccsc1C1(O[C@H](C)[C@H](N)C(=O)O)c2ccccc2-c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.