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            <funder>E.B. and H.G. are grateful for the funding of a Ph.D. fellowship by Universite de Lyon and Universite de Lorraine, respectively. Calculations were performed at the Lyon PSMN cluster and Nancy local computing service. This work was performed within the framework of the COST in Chemistry Action CM1201 'Biomimetic Radical Chemistry'. A.M. thanks CNRS for the funding of the "Chaire d'excellence" program.</funder>
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