methyl 2-(3-oxo-2-pentyl-1-cyclopentenyl)acetate

3-Oxo-2-pentyl-1-cyclopentene-1-acetic acid methyl ester

2-Pentyl-3-oxo-1-cyclopentene-1-acetic acid methyl ester

1-Cyclopentene-1-acetic acid, 3-oxo-2-pentyl-, methyl ester