a ganglioside GM3 + CMP-N-acetyl-9-O-acetyl-beta-neuraminate => a ganglioside Ac-O-9-GD3 + CMP + H(+)
a ganglioside gm3 + cmp-n-acetyl-9-o-acetyl-beta-neuraminate => a ganglioside ac-o-9-gd3 + cmp + h(+)