You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule ethyl (1R,4S,5R,9S,10R,13S,14R)-5,9,13-trimethyl-14-prop-2-ynoxytetracyclo[11.2.1.01,10.04,9]hexadecane-5-carboxylate ?
user
C25H38O3
assistant