1- CONVERT YOUR SEQUENCE TO FASTA FORMAT BY USING https://www.ebi.ac.uk/Tools/sfc/emboss_seqret/
2- REMOVE THE STARTER TAG ">" FROM THE SEQUENCE AND THE HEADER LINE
3- REMOVE THE LAST SPACE IN THE SEQUENCE
4- PAST IT AS A FREE TEXT FROM DEFINITION LINE
youtube link: https://www.youtube.com/watch?v=ynTWT9bdJe0
The author: MOHAMMED AHMED EZZ ELREGAL HASSAN
email:ezz111@yahoo.com
the tool link : https://sourceforge.net/projects/rfret/