[Lithium]

Can someone tell me the major product of 2E,4E,6E-octa-2,4,6-triene and halogen light?  Can this reaction occur?   I know its going to form a cyclohexane with two methyl i just need to know the sterochemistry cis or trans.  I know you have to use 4n+2 since it has 6 pie electrons.  I was informed by a classmate this couldnt happen.  is he correct if not what is the answer

[azmanam]

as written, the reaction will not occur.  the ends of the pi system cannot overlap to undergo the electrocyclization.

[azmanam]

(and if it did cyclize, it would not form a cyclohexane)