171962-28-0

Pentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1(25),3,- 5,7(28),9,11,13(27),15,17,19(26),21,23- dodecaene-5,11,17,23-tetrasulfonic acid,25,26,27,28-tetramethoxy-,tetrasodium salt