Using NCC(=O)O, CCOC(=O)c1nc(-c2ccc(C#N)cc2)c2nc(-c3ccccc3)sc2c1O to produce N#Cc1ccc(-c2nc(C(=O)NCC(=O)O)c(O)c3sc(-c4ccccc4)nc23)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.