24-Oxa(14)cytochalasa-6(12),13,21-triene-1,23-dione, 7,20-dihydroxy-16-methyl-10-phenyl-, dihydro deriv., (7S,13E,16R,20R,21E)- 74409-92-0 Cytochalasin H(2)B Cytochalasin H2B