You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-(4-butylphenyl)-4-(3-methyl-1,2,4-oxadiazol-5-yl)-8-oxa-2-azaspiro[4.5]decane-2-carboxamide .
user
C22H30N4O3
assistant