Task: Class Definition Understanding (ontology: Sciences/Biology)

Which of the following definitions best describes 'succinyladenosine'?

A. A 3-hydroxyaspartic acid that has S configuration at the carbon bearing the amino group.
B. An aspartic acid derivative that is L-aspartic acid in which one of the amine hydrogens is substituted by a 9-beta-D-ribofuranosyl-9H-purin-6-yl group.
C. A derivative of adenosine in which the 5'-hydroxymethyl group is replaced by N-ethylcarboxamido and one of the hydrogens of the exocyclic amino function is substituted by a 3-iodobenzyl group.
D. A member of the class of adenosines that is adenosine in which the hydroxy group at position 2' is replaced by a methoxy group. It has been isolated from the mycelia of Cordyceps sinensis.

Answer: An aspartic acid derivative that is L-aspartic acid in which one of the amine hydrogens is substituted by a 9-beta-D-ribofuranosyl-9H-purin-6-yl group.