L-beta-aspartyl-L-seryl-L-threonyl-L-allothreonyl-L-alanylglycyl-trans-3-hydroxy-L-prolyl-eryth ro-3-hydroxy-L-leucyl-beta-methyl-L-tryptophyl-alpha,beta-didehydro-L-tryptophyl-cis-3-hydroxy-L-proline beta(1)-lactone