This link explains the notation of the double bonds in a benzene ring:
Line Drawings
The benzene ring is not fixed-- it is always in motion. In my day the circle inside the ring showing in the link above was how it was commonly written.
Doxepin is doxepin or the FDA would not allow that name on the drug for identification. There would be another variant type name. The hydrochloride is even the same, and if that were different, it could denote a slightly different solubility, rate perhaps.
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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