Assertion: cytosine's ring | /r/CapableOf | involve two non-symmetry related hmetf
Facets:
value: -symmetry
type: OTHER
Source sentences:
text: However, considering only the N10 and N20 cations, we observe the formation of a four-level R 4 4 ( 20 ) ring involving two non-symmetry related HMetf, that interact with terminal and bridging μ 2 - and μ 3