serotonin + acetyl-CoA <=> N-acetylserotonin + CoA + H(+)
serotonin + acetyl-coa <=> n-acetylserotonin + coa + h(+)
serotonin + acetyl-CoA <=> N-acetylserotonin + CoA + H(+)
serotonin + acetyl-coa <=> n-acetylserotonin + coa + h(+)