N-[(5S)-5-amino-5-carboxypentanoyl]-L-cysteinyl-D-valine + O2 => isopenicillin N + 2 H2O
n-[(5s)-5-amino-5-carboxypentanoyl]-l-cysteinyl-d-valine + o2 => isopenicillin n + 2 h2o
N-[(5S)-5-amino-5-carboxypentanoyl]-L-cysteinyl-D-valine + O2 => isopenicillin N + 2 H2O
n-[(5s)-5-amino-5-carboxypentanoyl]-l-cysteinyl-d-valine + o2 => isopenicillin n + 2 h2o