You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S,6S,9S,12R,21R,24R)-30-ethyl-33-[(E,1R,2R)-1-hydroxy-2-methylhex-4-enyl]-1,4,7,10,12,15,25,28-octamethyl-6,9,18,24-tetrakis(2-methylpropyl)-3,21-di(propan-2-yl)-1,4,7,10,13,16,19,22,25,28,31-undecazacyclotritriacontane-2,5,8,11,14,17,20,23,26,29,32-undecone is the IUPAC name of a molecule. Please give its molecular formula.
user
C61H109N11O12
assistant