You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[10-amino-7-(2-methoxycarbonylphenyl)benzo[c]xanthen-1-ylidene]azanium;1',10'-diaminospiro[2-benzofuran-3,7'-benzo[c]xanthene]-1-one;1'-(dimethylamino)-10'-hydroxyspiro[2-benzofuran-3,7'-benzo[c]xanthene]-1-one;methyl 2-[1-(dimethylamino)-10-oxobenzo[c]xanthen-7-yl]benzoate;methyl 2-(10-hydroxy-1-iminobenzo[c]xanthen-7-yl)benzoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C127H92N7O18+
assistant