You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[1-(2,4-dimethylphenyl)tetrazol-5-yl]sulfanyl-N-[(2-methoxyphenyl)methyl]propanamide by IUPAC nomenclature, provide its molecular formula.
user
C20H23N5O2S
assistant