label: alanine / arginine / glycine / histidine / isoleucine / leucine / lysine / magnesium chloride / methionine / phenylalanine / potassium chloride / proline / serine / sodium chloride / sodium phosphate / threonine / tryptophan / tyrosine / valine
label_lc: alanine / arginine / glycine / histidine / isoleucine / leucine / lysine / magnesium chloride / methionine / phenylalanine / potassium chloride / proline / serine / sodium chloride / sodium phosphate / threonine / tryptophan / tyrosine / valine