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Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	wherein X, Het and Ar2 are as defined for compounds of formula (I), P is a protecting group and M is a metal, for example, lithium.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com