[{"from": "human", "value": "Please give me some details about this molecule. [C][C][=C][Branch1][P][C][=Branch1][C][=O][C][=C][C][=C][C][=C][Ring1][=Branch1][C][Ring1][O][=O][C][/C][=C][Branch1][C][\\C][/C][C][C][C@H1][Branch1][C][C][C][C][C][C@H1][Branch1][C][C][C][C][C][C][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is an analogue of the naphthoquinone vitamin K found in plants.  The vitamins K are essential for blood coagulation as it is necessary for the hepatic synthesis of the coagulation factors II, VII, IX, and X; deficiency results in a bleeding diathesis. These vitamins are lipo-soluble; absorption via intestinal lymphatics requires the presence of bile salts. (NCI04)"}]