Using O=C(O)c1cccc2cc[nH]c12, CC(C)(C)OC(=O)NN to produce CC(C)(C)OC(=O)NNC(=O)c1cccc2cc[nH]c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.