You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R,3S,5R)-5-(4-aminopyrrolo[2,3-b]pyridin-1-yl)-2-(hydroxymethyl)oxolan-3-ol The above is the IUPAC name of a molecule. Write its molecular formula.
user
C12H15N3O3
assistant