<http://webisa.webdatacommons.org/prov/131518569>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/120307465> .
<http://webisa.webdatacommons.org/120307465>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<docstoc.com> .
<http://webisa.webdatacommons.org/120307465>	<http://www.w3.org/ns/prov#value>	"Y.sup.a is a group which can be substituted by a group of the formula: ##STR5## X is hydroxy or its reactive derivative, and R.sup.6 is amino having a protective group." .
<http://webisa.webdatacommons.org/120307465>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .