Question: How to plot the function defined by this integral: f(x):=int((sin(t)^2)^(exp(t)),t=x..infinity)

I have a function defined by this integral: f(x):=int((sin(t)^2)^(exp(t)),t=x..infinity). The question is how to plot this function from x=-5 to x=+5 in Maple 2020? I do as follow, but it does not work for Maple 2020 (15 days trial version).

f := int((sin(t)^2)^exp(t), t = x .. infinity)
plot(f, x = -5 .. 5)

Maple version: Maple 2020.2, Maple Build ID 1502365.

Thank you very much. 

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