(S)-2'-((3-methyloxetan-3-yl)methoxy)-7'-(pyrimidin-5-yl)-5H-spiro[oxazole-4,9'-xanthen]-2-amine

(S)-1-((2-amino-2'-(pyrimidin-5-yl)-5H-spiro[oxazole-4,9'-xanthen]-7'-yl)oxy)propan-2-one