One of the major issues with this paper, as identified by both reviewers, is that it focuses too much on the technical advancements and not enough on the atmospheric science implications. While the modifications have improved the manuscript somewhat, it still does not quite fall within scope because while new molecules and potential mechanisms are identified, very little attention is paid to what the implications for wider atmospheric science are (it is mentioned, but is currently buried within the text), so as such, this manuscript still comes across as a technical study where the atmospheric science is nothing more than a byproduct. I would surmise that readers unfamiliar with the fundamental mechanisms are unlikely to appreciate the significance of this work.

This should be fairly easy to remedy through the inclusion of more text in the abstract, discussion and conclusions that summarises what the general implications of these new observations are, directed at a non-specialist atmospheric science audience. Do these new molecules/mechanisms identified warrant further study, and if so, why? Could the inclusion of these mechanisms hypothetically improve NPF/SOA model performance? I would also try to better highlight in the abstract and introduction how our knowledge in this area may be incomplete and why developments like this may help to address it.