2-Oxepanone, polymer with oxirane, monomethyl ether, diblock Caprolactone polymer ester with polyethylene glycol monomethyl ether Caprolactone-ethylene oxide diblock copolymer methyl ether Caprolactone-oxirane diblock copolymer methyl ether Caprolactone-polyethylene glycol monomethyl ether diblock copolymer Ethylene oxide-caprolactone diblock copolymer methyl ether Ethylene oxide-ε-caprolactone diblock copolymer methyl ether MePEG-b-PCL Methoxypolyethylene glycol-εcaprolactone copolymer MPEG-PCL ε-Caprolactone-ethylene oxide diblock copolymer methyl ether ε-Caprolactone-ethylene oxide diblock copolymer, monomethyl ether ε-Caprolactone-monomethoxypolyethylene glycol diblock copolymer ε-Caprolactone-oxirane diblock copolymer monomethyl ether ε-Caprolactone-polyethylene glycol methyl ether diblock copolymer