Task: Question Answering
Input (English): Question: The reaction of trans-2-butene with m-chloroperbenzoic acid (mCPBA) gives: 
 Options:  <1> A mixture of diastereoisomers. <2> (R) -3-Cloroperbenzoate 2-butyl. <3> cis-2,3-Dimethyloxacyclopropane. <4> trans-2,3-Dimethyloxacyclopropane. <5> () -3-Cloroperbenzoate 2-butyl.
Output (English): 4