a UDP-3-O-[(3R)-3-hydroxyacyl]-alpha-D-glucosamine + acetate => a UDP-3-O-[(3R)-3-hydroxyacyl]-N-acetyl-alpha-D-glucosamine + H2O
a udp-3-o-[(3r)-3-hydroxyacyl]-alpha-d-glucosamine + acetate => a udp-3-o-[(3r)-3-hydroxyacyl]-n-acetyl-alpha-d-glucosamine + h2o