preferred_name: N(1),N(3)-bis[2-[bis(2-{[2-({2-[(2-{[6-(beta-D-glucopyranosyl-(1->3)-beta-D-glucopyranosyl-(1->3)-beta-D-glucopyranosyl-(1->3)-beta-D-glucopyranosyl-(1->3)-beta-D-glucopyranosyl-(1->3)-beta-D-glucopyranosyloxy)hexanoyl]amino}ethyl)amino]-3,4-dioxocyclobut-1-en-1-yl}amino)ethyl]amino}-2-oxoethyl)amino]ethyl]-2-[2-(2-{2-[(prop-2-yn-1-yl)oxy]ethoxy}ethoxy)ethyl]malonamide