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-methyl-1-(2-propan-2-yl-4,5,6,7-tetrahydroindazol-6-yl)-3-(2-thiophen-2-ylethyl)guanidine ?
user
C18H27N5S
assistant