For the function f(x) = 1(-1((-1x - 3)/(3x + 2)) - 2)^2 + 4(-1((-1x - 3)/(3x + 2)) - 2) + 5, 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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