About: http://webisa.webdatacommons.org/157067367

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	A combination of R15 and R16 in the compound of general formula (IV) can be a case where R15 is a hydrogen atom and R16 is a sulfonate group, or a case where R15 is a sulfonate group and R16 is a hydrogen atom.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com