label: 2-(benzyloxycarbonyl)amino-5-(1'-carboxy-2'-phenylethyl)carbamoyl-3-oxo-2,3,5,6,11,11b-hexahydro-1H-indolizino(8,7-b)indole
label_lc: 2-(benzyloxycarbonyl)amino-5-(1'-carboxy-2'-phenylethyl)carbamoyl-3-oxo-2,3,5,6,11,11b-hexahydro-1h-indolizino(8,7-b)indole