Using NC[C@@H]1CCCO1, O=C(O)c1c(-c2ccc3[nH]ncc3c2)nnn1Cc1ccccc1 to produce O=C(NC[C@@H]1CCCO1)c1c(-c2ccc3[nH]ncc3c2)nnn1Cc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.