You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(1S,9R,10S)-17-(cyclobutylmethyl)-10-hydroxy-17-azatetracyclo[7.5.3.01,10.02,7]heptadeca-2(7),3,5-trien-4-yl] (2E)-5-methylhexa-2,4-dienoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H37NO3
assistant