jalapinolic acid 11-O-D-glucopyranosyl-1-6-O-(3-isobutyryl-4-O-2-methylbutyryl)glucopyranosyl-1-3-O-((2,4-di-O-2-methylbutyryl)rhamnopyranosyl-1-2)-O-glucopyranosyl-1-2-glucopyranoside intramolecular 1,2'''''-ester