(E)-4-Methyl-1-oxacyclonona-3-en-2-one
(E)-4-Methyl-1-oxacyclonona-3-en-2-one ??
??
(E)-4-Methyl-1-oxacyclonona-3-en-2-one C??? ??, ??, ??
(E)-4-Methyl-1-oxacyclonona-3-en-2-one ?? ?? ? ???
???
?? ??
(E)-4-Methyl-1-oxacyclonona-3-en-2-one ?? ??
???( 0)?? ??