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<http://webisa.webdatacommons.org/prov/516199914>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/227218249> .
<http://webisa.webdatacommons.org/227218249>	<http://www.w3.org/ns/prov#value>	"s C1-4 alkoxy, X is >C???O, and R1 and R2 are each hydrogen, Y is other than o-, m- or p-halogen-substituted styryl. 4." .
<http://webisa.webdatacommons.org/prov/472481682>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/227218249> .