# What I Am? - Essence of every living

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?

Notes:

• 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.

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

• Ah, I read the rest of the page, I think I know which part you were hinting at now, and I learned something new! – Fodder Dec 4 '14 at 0:59