Input is a list of InChiKeys separated by semi-colons.
metabolites_to_go_inchikey(iklist = "AADLTHQNYQJHQV-SVLGDMRNSA-N;ABVVZYXTZLEOHP-CMDGGOBGSA-O;AEUCYCQYAUFAKH-YEUCEMRASA-N;AFSHUZFNMVJNKX-CLFAGFIQSA-N;AFWBWPCXSWUCLB-WDSKDSINSA-N;AWUCVROLDVIAJX-VKHMYHEASA-N;AXKTVZFNYZPELI-GAXXYEEVSA-N;AYKZHWQCRQJYFJ-OWBHPGMISA-N;AYSIAIIEZAVRGL-NKHFZFFVSA-N;BDIIZHQNVIYLPJ-QOSDPKFLSA-N;BITHHVVYSMSWAG-KTKRTIGZSA-N;BRSRLMBMUIZSFE-UHKGRJRRSA-N")