<http://webisa.webdatacommons.org/prov/141254777>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/145873337> .
<http://webisa.webdatacommons.org/145873337>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/145873337>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/141098881>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/145873337> .
<http://webisa.webdatacommons.org/145873337>	<http://www.w3.org/ns/prov#value>	"Also if R4 or R5 is a hydrogen then the protected amino acids 6 are employed in the coupling reaction, wherein L is a protecting group as defined above." .