special symbols (to be entered via X-button): A: any atom except H Q: any atom except H and C X: any halogen atom H: explicit hydrogen JME applet courtesy of Peter Ertl, Novartis |
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special symbols (to be entered via X-button): A: any atom except H Q: any atom except H and C X: any halogen atom H: explicit hydrogen JME applet courtesy of Peter Ertl, Novartis |
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