Using O=Cc1cnn2c(NC3CC3)cc(-c3csc(CBr)c3)nc12, C1CCNC1 to produce O=Cc1cnn2c(NC3CC3)cc(-c3csc(CN4CCCC4)c3)nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.