You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by 7-[4-(10,14-dioxapentacyclo[11.7.0.03,11.04,9.015,20]icosa-1,3(11),4(9),5,7,12,15,17,19-nonaen-6-yl)phenyl]-16-phenyl-3,20-dioxapentacyclo[11.7.0.02,10.04,9.014,19]icosa-1(13),2(10),4(9),5,7,11,14(19),15,17-nonaene ?
user
C48H26O4
assistant