You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name methyl (1R,4S,5R,9S,10R,14S)-5,9-dimethyl-13-propan-2-yl-15-oxatetracyclo[8.5.0.01,14.04,9]pentadec-12-ene-5-carboxylate into its molecular formula.
user
C21H32O3
assistant