The
Clay Bar should take the sap off. For any stubborn spots that the
clay does not get, use some Isopropyl Alcohol on a microfiber towel. Be careful not to scrub too hard, so you don't scratch the paint. Give the IPA some time to soak in and soften the sap.
Once you have the sap removed, apply
Paint Sealant, which will make it much easier to remove the sap next time.