You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[3-(2,6-dioxaspiro[4.5]decan-9-ylsulfanyl)-5-methyl-1,2,4-triazol-4-yl]ethanamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C13H22N4O2S
assistant