I agree with the assessment of the reviewer #2 that writing can still be polished in the final version, for example by splitting longer paragraphs into shorter self-contained ones. There are also some typos, and I am listing a few examples below. Since line numbers were not included in the document, I am only specifying the page but the phrases are easy to find by searching.
Page 2: “has shown to have” -> “has been shown to have”
Page 2: “estimated between” -> “estimated to fall between”
Page 2: “governed by competition” -> “governed by a competition”
Page 2: Reaction R7 is written differently in the SI section and in the paper. Make the same for consistency?
Page 2: need to fix grammar in “but have not been unambiguously been proven”
Page 3: “Here we will present a very cursory description…” – the description that follows is actually rather detailed so there is no need for this disclaimer in my opinion.
Page 4: “operating procedure is” -> “operating procedure was”
….
Figure 2 caption: “graph” -> “graphs”
Page 9: Incomplete references:
• Evans 2005 (needs a page number and/or doi)
• Folkers 2003 (needs a page number and/or doi)