
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Given the function $f(x)=e^{x}\left( \frac {1}{3}x^{3}-2x^{2}+(a+4)x-2a-4\right)$, where $a\in\mathbb{R}$, and $e$ is the base of the natural logarithm.
$(1)$ For the inequality $f(x) < - \frac {4}{3}e^{x}$ to always hold on $(-\infty,2)$, find the range of values for $a$;
$(2)$ Discuss the number of extreme points of the function $f(x)$.

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