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

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