You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2S)-3-[(2-chlorophenyl)methoxy]-2-hydroxypropyl]-[(1R)-2-phenyl-1-(3-phenyl-1,2,4-oxadiazol-5-yl)ethyl]azanium is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H27ClN3O3+
assistant