preferred_name: L-cysteine(out) + L-arginine(in) => L-cysteine(in) + L-arginine(out)
preferred_name_lc: l-cysteine(out) + l-arginine(in) => l-cysteine(in) + l-arginine(out)
label: L-cysteine(out) + L-arginine(in) => L-cysteine(in) + L-arginine(out)
label_lc: l-cysteine(out) + l-arginine(in) => l-cysteine(in) + l-arginine(out)