epsilon-CAPROLACTONE6-hexanolactoneCaprolactoneoxepan-2-one1-oxa-2-oxocycloheptanehexano-6-lactoneepsilon-caprolactone2-氧杂环庚酮2-Oxepanone6-己内酯6-Caprolactone monomerε-Caprolactoneε-己内酯6-己内酯单体epsilon-Caprolactoneepsilon-Caprolactonehexano-6-lactone2-oxohexamethylene oxidehexanoic acid, epsilon-lactone1-Oxa-2-oxocycloheptane2-oxacycloheptanonehexan-6-olide6-hydroxyhexanoic acid, epsilon-lactone6-hexanolactonecaprolactone6-hydroxyhexanoic acid lactone6-Hexanolide2-Oxepanoneepsilon-caprolactone monomerhexano-6-lactone1,6-hexanolideOxepan-2-oneEpsilon-Caprolactone