4-HYDROXY-2-HEXYNOIC ACID METHYL ESTER
4-HYDROXY-2-HEXYNOIC ACID METHYL ESTER ??
??
4-HYDROXY-2-HEXYNOIC ACID METHYL ESTER C??? ??, ??, ??
4-HYDROXY-2-HEXYNOIC ACID METHYL ESTER ?? ?? ? ???
???
?? ??
4-HYDROXY-2-HEXYNOIC ACID METHYL ESTER ?? ??
???( 0)?? ??
4-HYDROXY-2-HEXYNOIC ACID METHYL ESTER ?? ??: