You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (Z,4Z)-4-ethylidene-7-[3-[2,4,5-tris[3-[3-(3-hydroxypropyl)pyridin-1-ium-1-yl]propyl]phenyl]propylimino]hept-5-en-1-ol into its molecular formula.
user
C51H73N4O4+3
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