You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(6,6,7,7,8,8,10,10,11,11,12,12,14,18,20,20,21,21,22,22,24,24,25,25,26,26-hexacosamethyl-23-aza-9-azoniaheptacyclo[17.7.1.15,9.02,17.04,15.023,27.013,28]octacosa-1,4,9(28),13,15,17,19(27)-heptaen-16-yl)-5-methoxycarbonylbenzoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C61H87N2O4+
assistant