For the function f(x) = 1sin(2π(1(1(-3|x + 2|) + 5)^2 + 3(1(-3|x + 2|) + 5) - 4) - 2) + 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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