You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule N-[[1-(2-methoxyethyl)cyclopropyl]methyl]-1,4,4a,5,6,7,8,8a-octahydrobenzo[d][1,3]thiazin-2-imine .
user
C15H26N2OS
assistant