(S)-2-(4-hydroxyphenyl)-3-(((5aR,6R)-6-methoxy-1,7-dioxo-1,3,4,5a,6,7-hexahydroazeto[2,1-b]furo[3,4-d][1,3]oxazin-6-yl)amino)-3-oxopropanoicacid
(S)-2-(4-hydroxyphenyl)-3-(((5aR,6R)-6-methoxy-1,7-dioxo-1,3,4,5a,6,7-hexahydroazeto[2,1-b]furo[3,4-d][1,3]oxazin-6-yl)amino)-3-oxopropanoicacid