You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[19-methoxy-13-(4-methoxyphenyl)-2-oxapentacyclo[12.8.0.03,12.04,9.017,22]docosa-1(14),3,5,8,12,17(22),18,20-octaen-7-ylidene]methyloxidanium;chloride The above is the IUPAC name of a molecule. Write its molecular formula.
user
C30H27ClO4
assistant