Using CC(=O)O, C=Cc1ccc2ncn(-c3ccc4c(c3)CCN4)c2n1 to produce C=Cc1ccc2ncn(-c3ccc4c(c3)CCN4C(C)=O)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.