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 methyl (1S,15S,17S,18S)-17-acetyl-7-[(1S,12S,14R,15E)-18-acetyl-15-ethylidene-18-(hydroxymethyl)-17-methyl-10,17-diazatetracyclo[12.3.1.03,11.04,9]octadeca-3(11),4,6,8-tetraen-12-yl]-6-methoxy-3,13-diazapentacyclo[13.3.1.02,10.04,9.013,18]nonadeca-2(10),4,6,8-tetraene-1-carboxylate ?
user
C44H52N4O6
assistant