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