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 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 —CR5A—R5B—CR6A—R6B—, 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 hydrogran atom, etc., R11 is a carboxyl, etc., and each of R7A and R7B is independently a hydrogen atom, etc.)
