Using CC(C)C(=O)NN, CCn1ncc2c(NC3CCCC3)c(C(=O)O)cnc21 to produce CCn1ncc2c(NC3CCCC3)c(C(=O)NNC(=O)C(C)C)cnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.