[{"from": "human", "value": "Given compound, write its InChI. ->  3-Propanoyloxymethylphenytoin\n"}, {"from": "gpt", "value": " InChI=1S/C19H18N2O4/c1-2-16(22)25-13-21-17(23)19(20-18(21)24,14-9-5-3-6-10-14)15-11-7-4-8-12-15/h3-12H,2,13H2,1H3,(H,20,24)\n"}]