Using CCCN, N#Cc1nc(C(=O)NCCCC(=O)O)c(O)c2ccn(Cc3ccccc3)c(=O)c12 to produce CCCNC(=O)CCCNC(=O)c1nc(C#N)c2c(=O)n(Cc3ccccc3)ccc2c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.