
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 a circle $M$: $x^{2}+y^{2}=r^{2}(r > 0)$ that is tangent to the line $l_{1}$: $x- \sqrt {3}y+4=0$, let point $A$ be a moving point on the circle, $AB⊥x$ axis at $B$, and moving point $N$ satisfies $\overrightarrow{AB}=2 \overrightarrow{NB}$, let the trajectory of moving point $N$ be curve $C$.
(1) Find the equation of curve $C$;
(2) Line $l$ is perpendicular to line $l_{1}$ and intersects curve $C$ at points $P$ and $Q$, find the maximum value of the area of $△OPQ$.

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