If you don't receive an email from Mestrelab with your MNova license number, contact with your UC San Diego email address. If you need the activation code for ChemOffice/ChemDraw, refer back to the entitlement lists where you downloaded the software.From there you'll get software downloads for ChemOffice/ChemDraw for Windows/macOS and for MNova Lite (aka MeRestNova ChemDraw Edition), along with user guides. Click Download Now to get to a link for downloading the most recent edition of ChemDraw (as of fall 2023, that's ChemOffice 22.2).Use your email address for the registration. Sign up to create an account with PerkinElmer (now Revvity Signals), or login if you already have that account.The first is for ChemDraw and MNova, and the second is for the cloud applications. Start at the Revvity Signals (PerkinElmer) ChemDraw Subscription Gallery and search for University of California San Diego. ChemOffice/ChemDraw & MNova Lite - Registration & Downloading