[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a 3-dehydro-4-methylzymosterol in which the methyl substituent at position 4 has alpha configuration. It is an intermediate in the biosynthesis of cholesterol."}, {"from": "gpt", "value": "[C][C@H1][C@@H1][C][C][C][=C][Branch1][=N][C@][Ring1][=Branch1][Branch1][#Branch1][C][C][C][Ring1][#Branch2][=O][C][C][C][C@][Branch2][Ring1][Branch1][C@H1][Ring1][N][C][C][C@@H1][Ring1][Branch1][C@H1][Branch1][C][C][C][C][C][=C][Branch1][C][C][C][C]"}]