What is the abbreviation for S 1 3 hydroxy 2 phosphonylmethoxypropyl cytosine?

Looking for the shorthand of S 1 3 hydroxy 2 phosphonylmethoxypropyl cytosine or how to abbreviate it? We have 2 shorthands for S 1 3 hydroxy 2 phosphonylmethoxypropyl cytosine.