ethyl (1,3-benzodioxol-5-ylmethyl){4-[(benzyloxy)imino]-10-(3-formyl-4-methoxyphenoxy)-1,2-bis(4-hydroxybutyl)-6a-(prop-2-en-1-yloxy)-1,2,4,5,6,6a,11b,11c-octahydrobenzo[kl]xanthen-6-yl}carbamate