You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(3R)-3-[(2R,5S)-5-(2-hydroxypropan-2-yl)-2-methyloxolan-2-yl]-2-oxa-8-azaspiro[4.5]decan-8-yl]-(4-propan-2-yloxyphenyl)methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H39NO5
assistant