You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 2-[(3R)-3-[(2R,8R)-2-(1,3-benzodioxol-5-yl)-4,7-dioxo-3,6,17-triazatetracyclo[8.7.0.03,8.011,16]heptadeca-1(10),11,13,15-tetraen-6-yl]pyrrolidin-1-yl]acetamide ?
user
C27H27N5O5
assistant