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tokens: We thank the ESO Paranal team for supporting our SPHERE and AMBER observations. We are also grateful to the referee Susanne Höfner for her valuable comments, particularly on the interpretation of the extended H emission. This research made use of the SIMBAD database, operated at the CDS, Strasbourg, France. We acknowledge with thanks the variable star observations from the AAVSO International Database contributed by observers worldwide and used in this research. K.O. acknowledges a grant from Universidad Católical del Norte.