L-histidyl-L-proline diketopiperazine(out) => L-histidyl-L-proline diketopiperazine(in)
l-histidyl-l-proline diketopiperazine(out) => l-histidyl-l-proline diketopiperazine(in)
L-histidyl-L-proline diketopiperazine(out) => L-histidyl-L-proline diketopiperazine(in)
l-histidyl-l-proline diketopiperazine(out) => l-histidyl-l-proline diketopiperazine(in)