(R)-3-(((6R,7R)-2-carbamoyl-3-(hydroxymethyl)-7-methoxy-8-oxo-5-oxa-1-azabicyclo[4.2.0]oct-2-en-7-yl)amino)-2-(4-hydroxyphenyl)-3-oxopropanoicacid
(R)-3-(((6R,7R)-2-carbamoyl-3-(hydroxymethyl)-7-methoxy-8-oxo-5-oxa-1-azabicyclo[4.2.0]oct-2-en-7-yl)amino)-2-(4-hydroxyphenyl)-3-oxopropanoicacid