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

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