Draw the product formed by the reaction of t-butoxide with (1 R,28)-1-bromo-2-methyI-1-phenylbutane (shown below). (Draw the correct stereoisomer of...

I got the following correct, but I am assuming it is an E2 reaction. However, I don't understand this because my chart indicates that an E2 reaction requires a strong base and I don't see how (CH3)3COH is a strong base. Where am I confused at?