You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[amino-[2-(6-methoxy-7-methyl-3,4-dihydro-2H-naphthalen-1-ylidene)ethylsulfanyl]methyl]azanium The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H23N2OS+
assistant