| http://www.w3.org/ns/prov#value | - ypentanoic acid, 3-hydroxy-4-methylheptanoic acid, 4-hydroxyoctanoic acid, and the like; and lactides such as l-lactide, d-lactide, and d,l-lactide; glycolide; and dilactones such as those of the formula: ##STR8## where R10 and q are as defined above and where the open valencies are substituted with hydrogen atoms.
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