You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1'S,2R,4S,5'R,6'R)-2'-amino-6'-ethyl-6'-(4-methoxyphenyl)-4-methylspiro[1,3-dioxolane-2,4'-3-azoniabicyclo[3.1.0]hex-2-ene]-1',5'-dicarbonitrile The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H21N4O3+
assistant