You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as (1S,2S)-2-[(2S)-2-methyl-1-oxa-4-azaspiro[4.4]nonane-4-carbonyl]cyclopropane-1-carboxylic acid using the IUPAC nomenclature.
user
C13H19NO4
assistant