[{"from": "human", "value": "Given InChI, write its compound. ->  InChI=1S/C20H30O2/c1-18-9-6-14(21)12-13(18)4-5-15-16(18)7-10-19(2)17(15)8-11-20(19,3)22/h12,15-17,22H,4-11H2,1-3H3\n"}, {"from": "gpt", "value": " 17a-Methyltestosterone\n"}]