For the function f(x) = -3(-2((-1(2|x + 3| - 2) + 2)/(3(2|x + 3| - 2) - 2))^2 + 5((-1(2|x + 3| - 2) + 2)/(3(2|x + 3| - 2) - 2))) + 3, find the number of maximal connected intervals in [-10, 10] where f'(x) < 0.

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