3,4,7,8-Tetrahydro-1-hydroxy-4a,7-epoxy-4aH-benzocyclohepten-9(2H)-on

3,4,7,8-Tetrahydro-9a-methyl-4a,7-epoxy-4aH-benzocyclohepten-1,9(2H,9aH)-dion

4-<5-(Methoxycarbonyl)methyl-2-furyl>buttersaeure-methylester