preferred_name: (2S,4S,5S)-2-amino-6-(3,4-dihydroxyphenyl)-4-hydroxy-5-(methylamino)hexanoyl-[peptidyl-carrier protein] + O2 => (2S,4S)-2-amino-4-[(3S)-7,8-dihydroxy-1,2,3,4-tetrahydroisoquinolin-3-yl]-4-hydroxybutanoyl-[peptidyl-carrier protein] + H2O2