AMINO GROUP non-polymer HETAIN H2 N 0 1999-07-08 2008-10-14 Y REL 16.023 NH2 N OpenEye OEToolkits N 2FLY RCSB N N 0 1 N N N 10.091 8.978 -7.810 0.000 0.000 0.000 N NH2 1 1HN H 0 1 N N N 9.517 8.769 -7.044 -0.385 -0.545 -0.771 HN1 NH2 2 2HN H 0 1 N N N 10.323 9.890 -8.082 1.020 0.000 0.000 HN2 NH2 3 sing N N 1 sing N N 2 N InChI=1/H3N/h1H3 QGZKDVFQNNGYKY-UHFFFAOYAF [NH2] [NH2] [NH2] [NH2] ammonia $l^{2}-azane RCSB