(1S,2S,6S,14R)-15-(cyclopropylmethyl)-10-[(1S,5R,13S,17S)-4-(cyclopropylmethyl)-10,17-dihydroxy-14-methylidene-4-aza-12-oxapentacyclo[9.6.1.01,13.07,18.05,17]octadeca-7(18),8,10-trien-9-yl]-5-methylidene-15-aza-7-oxapentacyclo[10.5.1.01,6.08,18.02,14]octadeca-8(9),10,12(18)-triene-2,9-diol