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 ethane;ethyl 2-[[2-(2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indol-6-yloxy)acetyl]amino]acetate;formic acid .
user
C20H29N3O6
assistant