You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[9-[2-carboxy-4-[[(2R,3S,4S,5R,6R)-3,4,5-trihydroxy-6-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]methylcarbamoyl]phenyl]-6-(dimethylamino)xanthen-3-ylidene]-dimethylazanium is the IUPAC name of a molecule. Please give its molecular formula.
user
C37H44N3O14+
assistant