preferred_name: L-phenylalanine(in) + L-alanine(out) => L-phenylalanine(out) + L-alanine(in)
preferred_name_lc: l-phenylalanine(in) + l-alanine(out) => l-phenylalanine(out) + l-alanine(in)
label: L-phenylalanine(in) + L-alanine(out) => L-phenylalanine(out) + L-alanine(in)
label_lc: l-phenylalanine(in) + l-alanine(out) => l-phenylalanine(out) + l-alanine(in)