6ST 6st 4-[(2~{R},3~{a}~{S},5~{S},6~{S},6~{a}~{S})-6'-chloranyl-6-(3-chloranyl-2-fluoranyl-phenyl)-4-(cyclopropylmethyl)-2'-oxidanylidene-spiro[1,2,3,3~{a},6,6~{a}-hexahydropyrrolo[3,2-b]pyrrole-5,3'-1~{H}-indole]-2-yl]benzoic acid 6ST