Pulse shape and molecular orientation determine the attosecond charge migration in Caffeine Thomas A. Niehaus, Mehdi Meziane, Franck Lepine, Alexandre Marciniak, Kaoru Yamazaki and Hirohiko Kono Eur. Phys. J. B, 91 7 (2018) 152 Published online: 04 July 2018 DOI: 10.1140/epjb/e2018-90223-5