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