5-bromo-4-chloro-3-indolyl-N-acetylneuraminic acid
5-bromo-4-chloro-3-indolyl-N-acetylneuraminic acid ??
??
5-bromo-4-chloro-3-indolyl-N-acetylneuraminic acid C??? ??, ??, ??
5-bromo-4-chloro-3-indolyl-N-acetylneuraminic acid ?? ?? ? ???
???
?? ??
5-bromo-4-chloro-3-indolyl-N-acetylneuraminic acid ?? ??
???( 0)?? ??