You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[1-amino-5-[16-butylidene-6-[(1-ethylcyclopentyl)methylidene]-4,14-dioxo-5,15-dioxapentacyclo[9.5.2.01,13.02,10.03,7]octadeca-3(7),12-dien-12-yl]-1,2,3,4,4a,5,6,7,8,8a-decahydroisoquinolin-2-ium-6-yl]pyrrole-2,5-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C41H52N3O6+
assistant