You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 4,4,5,5-tetramethyl-2-[(2E)-3-propan-2-ylidene-2-prop-2-ynylidene-1-benzofuran-5-yl]-1,3,2-dioxaborolane .
user
C20H23BO3
assistant