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In the essence of every living.
And even in those who borders the live.
There, I am.

From the letters, I am the first.
Five times the seven, five times the six and five times the one.
But then, we have two circles.

What I am?

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  • This have a unique answer and it is a single word.
  • Hopefully it won't make sense to anything else, ensuring the uniqueness.
  • The challenge contains enough information for people find out what is this.
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Adenine http://en.wikipedia.org/wiki/Adenine

In the essence of every living. And even in those who borders the live. There, I am.

Has to do with cellular respiration, and is a component of DNA/RNA.

From the letters, I am the first

Starts with A

Five times the seven, five times the six and five times the one.

The chemical composition is $C5N5H5$ (5 carbon, 5 nitrogen, 5 hydrogen)

But then, we have two circles.

The molecule is 2 circles in shape

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    $\begingroup$ Ah, I read the rest of the page, I think I know which part you were hinting at now, and I learned something new! $\endgroup$
    – Fodder
    Dec 4, 2014 at 0:59

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