The disclosure relates to compounds of the formula (I): wherein R1, R2, R3, and R4 are as defined in the disclosure, or a pharmaceutically acceptable salt thereof; which is formed by the microorganism ST 201196 (DSM 18870); the use thereof for the treatment and/or prophylaxis of fungal disorders; medicaments containing a compound of formula (I); processes for production thereof; and the microorganism ST 201196 (DSM 18870).