Task: Question Answering
Input (English): Question: Aflatoxin B1 is a natural product that owes its toxicity to a product of its metabolism, very reactive, of the nature of: 
 Options:  <1> 1,2-Diol. <2> Quinonymine <3> Epoxide <4> Α, β-unsaturated carbonyl. <5> Radical hydroperoxide.
Output (English): 3