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 2-[5-(4-ethylphenyl)tetrazol-2-yl]-N-[(R)-phenyl(thiophen-2-yl)methyl]acetamide using the IUPAC nomenclature.
user
C22H21N5OS
assistant