(2R)-2-{[(2R)-2-amino-3-(2-naphthyl)propanoyl]amino}-3-{[(2S,5R,8S,11S,14R,17S,18R)-5-(1H-indol-3-ylmethyl)-8-(4-aminobutyl)-17-carbamoyl-18-hydroxy-1-(4-hydroxyphenyl)-3,6,9,12,15-pentaoxo-11-(prop-2-yl)-14-(sulfomethyl)-4,7,10,13,16-pentazanonadec-2-yl]amino}-3-oxopropane-1-sulfonic acid,2,2,2-trifluoroacetic acid (1:n)