You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule methane;1-methyl-3-[2-[5-[3-(1-methyl-2H-pyrrol-1-ium-3-yl)prop-2-enylidene]pyrrolidin-3-ylidene]ethylidene]-2H-pyrrole into molecular formula.
user
C27H56N3+
assistant