Using O=C(OCc1ccccc1)C1N2C(=O)C(NC(c3ccccc3)(c3ccccc3)c3ccccc3)[C@H]2SC12CCCCC2 to produce NC1C(=O)N2C(C(=O)OCc3ccccc3)C3(CCCCC3)S[C@H]12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.