I5Y i5y (6S,9R,20R,23S)-N-{[4-(aminomethyl)phenyl]methyl}-20-[(benzenesulfonyl)amino]-3,13,21-trioxo-2,6,9,14,22-pentaazatetracyclo[23.2.2.2~6,9~.2~15,18~]tritriaconta-1(27),15,17,25,28,30-hexaene-23-carboxamide I5Y