preferred_name: L-histidyl-L-proline diketopiperazine(in) <=> L-histidyl-L-proline diketopiperazine(out)
preferred_name_lc: l-histidyl-l-proline diketopiperazine(in) <=> l-histidyl-l-proline diketopiperazine(out)
label: L-histidyl-L-proline diketopiperazine(in) <=> L-histidyl-L-proline diketopiperazine(out)
label_lc: l-histidyl-l-proline diketopiperazine(in) <=> l-histidyl-l-proline diketopiperazine(out)