Consider a benzofuran scaffold in which the five-membered furan ring contains an oxygen at position 1 and is fused to a benzene ring via two shared carbons at positions 4 and 5. Number the fused system around the peripheral atoms so that O-1 is connected to C-2 and then C-3, with the benzene ring running from C-4 around to C-7 and back to O-1. In this numbering:
	- A fluorine substituent is present on the benzene portion at C-5.
	- The furan carbon at C-2 bears a single tetra-valent carbon substituent.
	- This tetra-valent carbon is bonded to a hydrazine group (-NH-NH2) and to a phenyl ring.
	- On the phenyl ring, a bromo substituent is located at the ortho position and a fluoro substituent at the para position relative to the point of attachment; all other ring carbons are unsubstituted.