| http://www.w3.org/ns/prov#value | - or ???C???C???, and optional hydrogen may be substituted with halogen; Y is a single bond or alkylene having a carbon number of approximately 1 to approximately 20; in the alkylene, optional ???CH2??? may be substituted with ???O???, ???CO???, ???COO???, ???OCO??? or ???CH???CH???, and optional hydrogen may be substituted with halogen; and m and n each are an integer of approximately 0 to approxim
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