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

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