prov:value
| - The heterocycle containing from 3 to 11 atoms, including 1 to 4 hetereoatoms chosen from O, S and N, can be aromatic or nonaromatic, monocyclic or bicyclic, and is in particular a pyridyl, imidazolyl, furyl, tetrahydrofuryl, furazanyl, thienyl, aziridinyl, oxiranyl, azetidinyl, quinolyl, tetrahydroquinolyl and tetrazolyl group.
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