COc1ccc2c(c1)N[C@@]1(C2=O)[C@H](C=C(C)C)N2C(=O)[C@@H]3CCCN3C(=O)[C@]2(O)[C@H]1O	Spiro[5H,10H-dipyrrolo[1,2-a:1',2'-d]pyrazine-2-(3H),2'-[2H]indole]-3',5,10(1'H)-trione