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