You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S,3R)-8-(2-cyclohexylethynyl)-5-[(2R)-1-hydroxypropan-2-yl]-3-methyl-2-(methylaminomethyl)-3,4-dihydro-2H-pyrido[2,3-b][1,5]oxazocin-6-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H33N3O3
assistant