1 SRZ Propoxy-L-serine 1.000 2 J8W (2~{S})-2-azanyl-3-(3-oxidanyl-3-oxidanylidene-propanoyl)oxy-propanoic acid 0.846 3 K5L (2~{R})-2-azanyl-3-(3-oxidanyl-3-oxidanylidene-propanoyl)oxy-propanoic acid 0.846 4 42Y O-propanoyl-L-serine 0.833 5 73C (2~{S})-2-azanyl-3-butoxy-propanoic acid 0.833 6 1X6 O-[(2e)-3-aminoprop-2-enoyl]-L-serine 0.769 7 432 O-butanoyl-L-serine 0.769 8 7BC 3-(acryloyloxy)propanoic acid 0.750 9 OAS O-acetylserine 0.750 10 OLZ O-(2-aminoethyl)-L-serine 0.750 11 7C9 O-methyl-L-serine 0.727