For the function f(x) = -3|(4(-3((-1x)/(2x + 3)) + 3)^2 - 1(-3((-1x)/(2x + 3)) + 3) - 2) - 1| - 2, find the number of maximal connected intervals in [-10, 10] where f'(x) < 0.

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