2'-deoxycytosine 5'-triphosphate, or dATP, one of the nucleotides (basic units) that make up DNA (deoxyribonucleic acid), the genetic material of all cellular organisms. Done in Inkscape.
Oxygen is red, nitrogen is green, phosphorus is silver, the rest is carbon. No hydrogens.

Tags: chemical, science, chemistry, biology, dCTP, cytidine triphosphate, nucleotide, DNA, pyrimidine