On how many maximal connected intervals within [-10, 10] is the derivative of f(x) = (2(3|(3sin(2π(5x + 4) + 2) - 2) - 3| - 1) + 3)/(2(3|(3sin(2π(5x + 4) + 2) - 2) - 3| - 1) - 1) negative?

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