You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(Z)-3-amino-2-carbamoyl-3-[4-[4-(3-oxomorpholin-4-yl)phenyl]-1H-pyrrol-2-yl]prop-2-enylidene]azanium is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H20N5O3+
assistant