You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance strontium;(Z)-1-(2-methoxyethoxy)-2,2,6,6-tetramethyl-5-oxoniumylidenehept-3-en-3-olate .
user
C14H26O4Sr+2
assistant