{HEAD ~ The dried preparation} containing I is reconstituted in an alcohol solvent, such as, for example, methanol and treated with {TAIL ~ an organic acid}, such as for example, p toluenesulfonic acid to remove the ethoxyethyl ether group 
treated with
{ HEAD ~ The dried preparation } containing I is reconstituted in an alcohol solvent , such as , for example , methanol and treated with { TAIL ~ an organic acid } , such as for example , p toluenesulfonic acid to remove the ethoxyethyl ether group
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH