I am trying to explore with simple_cycpep_predict using compstatin (from 2QKI as a toy example). This molecule is both N-term acetylated and C-term amidated, and I am having the hardest time trying to specify those modifications. As far as I understand it, simple_cycpep_predict doesn't use fasta format as input but uses space delimted 3 letter code to specify peptide sequence (the file that I am using is attached here). I tried using -extra_patch_fa with N_acetylated.txt but it doesn't seem to do anything. Can someone point me in the right direction?