epicycle
metalacyclic
exocyclic
cyclic
homocyclic
annelated
tetraazacyclic
chelate compound
open chain
triazine
azaheterocycle
four-membered
multicyclic
4-membered
polymacrocyclic
aminocyclopropanecarboxylic acid
pentaazamacrocycle
heterocyclic
organometallic
metallacycle
electron shell
ruthenium
lanthanum
krypton
germanium
3-membered
oxygen
three-membered
calcium
beryllium
fuse
pseudopericyclic
metallocycle
multiring
polycyclization
hydrogen
five-membered
isocyclic
5-membered
alicyclic compound
six-membered
chelate
complex
phosphacyclic
coordination compound
multi-carbon
polycyclic
6-membered
annulation
metal cluster compound