You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 3-hydroxy-2-(3-methylpyridin-1-ium-1-yl)-3-(3-nitrophenyl)-N-prop-2-enylprop-2-enethioamide .
user
C18H18N3O3S+
assistant