preferred_name: N-acetyl-alpha-neuraminosyl-(2->8)-N-acetyl-alpha-neuraminosyl-(2->3)-beta-D-galactosyl-(1<->1')-ceramide + CMP + H(+) => N-acetyl-alpha-neuraminosyl-(2->3)-beta-D-galactosyl-(1<->1')-ceramide + CMP-N-acetyl-beta-neuraminate