About: http://webisa.webdatacommons.org/183784360

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 which R49, R50 and R51 independently of one another are selected from ???CH3, ???CH2???CH3, ???CH2???CH2???CH3, ???CH(CH3)???CH3, wherein R49 can also be ???H and X is an anion.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr