The present invention provides a compound exhibiting a strong antimicrobial spectrum against various bacteria, including gram-negative bacteria, or a pharmaceutical composition having an antimicrobial activity against carbapenem-resistant bacteria. Provided is a compound represented by formula (I), an ester thereof or a pharmaceutically acceptable salt thereof, or a hydrate thereof. (I) (In the formula, -W- is -S(=O)- or -S(=O)2-, -T- is -CR4AR4B- or -CR5AR5B-CR6AR6B-, each of R4A, R4B, R5A, R5B, R6A, and R6B is independently a hydrogen atom, etc., R1 is a substituted or unsubstituted heterocyclic group, etc., each of R2A and R2B is independently a hydrogen atom, etc., or R2A and R2B together form a substituted or unsubstituted methylidene, etc., R3 is a hydrogen atom, etc., R11 is a carboxy, etc., and each of R7A and R7B is independently a hydrogen atom, etc.)
