Using NC(=O)c1cccc2c(N[C@H](CCNC(=O)OCc3ccccc3)c3ccccc3)ncnc12 to produce NCCC(Nc1ncnc2c(C(N)=O)cccc12)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.