preferred_name: L-leucyl-L-phenylalanine + N(alpha)-formyl-L-methionine => N(alpha)-formyl-L-methionyl-L-leucyl-L-phenylalanine + H2O
preferred_name_lc: l-leucyl-l-phenylalanine + n(alpha)-formyl-l-methionine => n(alpha)-formyl-l-methionyl-l-leucyl-l-phenylalanine + h2o
label: L-leucyl-L-phenylalanine + N(alpha)-formyl-L-methionine => N(alpha)-formyl-L-methionyl-L-leucyl-L-phenylalanine + H2O
label_lc: l-leucyl-l-phenylalanine + n(alpha)-formyl-l-methionine => n(alpha)-formyl-l-methionyl-l-leucyl-l-phenylalanine + h2o