You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (5S,6S,7S,7aS)-5-butyl-6,7-dihydroxy-5,6,7,7a-tetrahydro-1H-pyrrolo[1,2-c][1,3]oxazol-3-one into its molecular formula.
user
C10H17NO4
assistant