For the function f(x) = 1(-1e^(-1((-2x - 3)/(-2x - 1))) - 1)^2 + 3(-1e^(-1((-2x - 3)/(-2x - 1))) - 1) - 4, find the number of maximal connected intervals in [-10, 10] where f'(x) < 0.

Present the answer in LaTex format: \boxed{Your answer}
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