[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][C@H1][Branch1][C][C][C][=Branch1][C][=O][N][C][=N][C][=C][Branch1][=C][N][=C][Ring1][=Branch1][C][C][C][NH1+1][=C][Branch1][C][N][N][C][=C][N][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][=Branch2]"}, {"from": "gpt", "value": "The molecule is the conjugate acid of oxidized Cypridina luciferin arising from selective protonation of the guanidino group; major species at pH 7.3. It is a conjugate acid of an oxidized Cypridina luciferin."}]