You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 2-[[6-(2-methoxyphenyl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl]sulfanyl]-N-[(4-methylphenyl)methyl]acetamide ?
user
C22H21N5O2S
assistant