You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
9-acetyl-6,9,11-trihydroxy-7-[[4-(1-hydroxypropan-2-yl)-9-(2-hydroxypropyl)-7,12-dimethyl-3-oxo-5,8,10,13-tetraoxa-2-azatricyclo[9.4.0.02,6]pentadecan-14-yl]oxy]-4-methoxy-8,10-dihydro-7H-tetracene-5,12-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C39H47NO15
assistant