3,11,19-Triazatetracyclo[19.3.1.1~5,9~.1~13,17~]heptacosa-1(25),5,7,9(27),13,15,17(26),21,23-nonaene-3,11,19-triacetic acid, 25,26,27-trihydroxy-7,15,23-trimethyl-, trimethyl ester AIDS-153493 AIDS153493 NSC700323