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 methyl (11R,12R,21S,22S)-16-acetyl-22-[3-[[(2R,5S)-1-cyclohexyl-9-(diaminomethylideneamino)-2-formyloxy-4-oxononan-5-yl]amino]-3-oxopropyl]-11-ethyl-12,17,21,26-tetramethyl-4-oxo-7,23,24,25-tetrazahexacyclo[18.2.1.15,8.110,13.115,18.02,6]hexacosa-1(23),2(6),5(26),8,10(25),13,15,17,19-nonaene-3-carboxylate .
user
C52H68N8O8
assistant