About: http://webisa.webdatacommons.org/111458811

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	In one preferred embodiment R.sup.18 is nitro or a group ##STR6## whereinR.sup.25, R.sup.26 and R.sup.27 are the same or different and each is hydrogen or a C.sub.1-4 alkyl group and t is an integer from 0 to 6.
http://www.w3.org/ns/prov#wasQuotedFrom	patentgenius.com