You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[9-[4-[[6-[2-[2-[[(2R)-5-(diaminomethylideneamino)-2-[3-(4-hydroxyphenyl)prop-2-enoylamino]pentanoyl]amino]ethoxy]ethylamino]-6-oxohexyl]sulfamoyl]-2-sulfophenyl]-6-(diethylamino)xanthen-3-ylidene]-diethylazanium is the IUPAC name of a molecule. Please give its molecular formula.
user
C52H70N9O11S2+
assistant