Using O=C(NOC1CCCCO1)c1ccc2c(c1)CN(C(=O)Cc1c[nH]c3ccccc13)CC2 to produce O=C(NO)c1ccc2c(c1)CN(C(=O)Cc1c[nH]c3ccccc13)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.