About: http://webisa.webdatacommons.org/429574763

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	R2 is an acetyl hydroxy-protecting group and R3 is a hydroxy-protecting group, and the protecting groups R1, R3 and, where appropriate, R2 are then replaced by hydrogen.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com