Provided is a means for stably storing a pharmaceutical composition comprising a compound represented by the General Formula (I) below and/or a salt thereof, and for providing the pharmaceutical composition to the market. A resin container colored with a color having a hue (H) within the range of 7.0Y to 9.99Y or 7.0YR to 9.99YR, value (V) within the range of 1.0 to 6.0, and chroma (C) within the range of 0.5 to 7.5, according to Munsell color coordinates, is filled with a pharmaceutical composition comprising a compound represented by the General Formula (I) and/or a salt thereof, to store the pharmaceutical composition.(wherein, in the formula, R1 and R2 each independently represent a hydrogen atom or a halogen atom)
