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