
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
Two new operations "$\triangle$" and "$\odot$" are defined as follows: for any rational numbers $a$ and $b$, $a\triangle b=a+b-1$ and $a\odot b=ab-a^{2}$. For example, $1\triangle \left(-1\right)=1+\left(-1\right)-1=-1$, $1\odot \left(-1\right)=1\times \left(-1\right)-1^{2}=-2$. Then, $\left(-2\right)\odot \left[8\triangle \left(-3\right)\]=\_\_\_\_\_\_$.

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