correct psilocybin molecular structure I'm writing a research paper on psilocybin.  I need to know the correct chemical structure.  When I look online it it shows different ones.  There is one with two OH molecules attached to the phosphorous and there is one with one OH and one O- attached to the phosphorous.  There is also one that I found with a O+ attached to the phosphorous.  Are they all they same or are they interchangeable?  Are there different ones?  I can't find a clear answer.  Any help is greatly appreciated.
Clearly, it cannot be an $\ce{O+}$, as that would require a triple bond to the oxygen, making the phosphorus in the middle quite unhappy.

Of the other two alternatives, both are correct -- however, it matters what environment you're considering the molecule. In neutral or slightly basic conditions, it will be an $\ce{O-},$ while in slightly acidic conditions, it will be an $\ce{OH}.$

Let me know if you need any clarification on why this is the case -- I have no idea what your level of knowledge is.