[{"from": "human", "value": "Given compound, write its InChI. ->  dibutyl sebacate\n"}, {"from": "gpt", "value": " InChI=1S/C18H34O4/c1-3-5-15-21-17(19)13-11-9-7-8-10-12-14-18(20)22-16-6-4-2/h3-16H2,1-2H3\n"}]