<http://webisa.webdatacommons.org/88282186>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/465350672>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/88282186> .
<http://webisa.webdatacommons.org/88282186>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<faqs.org> .
<http://webisa.webdatacommons.org/88282186>	<http://www.w3.org/ns/prov#value>	"is an integer of 1 to 3, provided that, when R2 is a methyl group," .