[{"from": "human", "value": "Write InChI of given compound. ->  3-Butanoyloxymethylphenytoin\n"}, {"from": "gpt", "value": " InChI=1S/C20H20N2O4/c1-2-9-17(23)26-14-22-18(24)20(21-19(22)25,15-10-5-3-6-11-15)16-12-7-4-8-13-16/h3-8,10-13H,2,9,14H2,1H3,(H,21,25)\n"}]