Using O=C(N[C@@H](Cc1c[nH]c2ccccc12)c1n[nH]c(=O)o1)OCc1ccccc1 to produce N[C@@H](Cc1c[nH]c2ccccc12)c1n[nH]c(=O)o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.